The US' strong assertion comes days after President Donald Trump pledged to answer further aggression from North Korea with "fire and fury".
The two PMs may also explore ways to further deepen ties between the navies of the two countries to check China's heightened activities in the Indian Ocean.
China is engaged in hotly contested territorial disputes in the South and East China Seas. Beijing has also made substantial progress in militarising its man-made islands in the past few years, which it says it has the right to defend.
'India should be aware that China will take full advantage of US domestic turmoil and reduced international prestige,' warns Colonel Anil A Athale (retd).
'If you take pride only in being a nation with nuclear weapons and a strong military, then you think very differently from those nations that take pride in having wonderful universities and academic institutions.'
'If I had not been elected President of the United States, we would right now, in my opinion, be in a major war with North Korea,' Trump said.
Heading G20 will give India a foreign affairs year like it has never had in history. You can trust Narendra Modi to exploit this to India's benefit. And, of course, to his own in his election year, explains Shekhar Gupta.
Kim did not rule out diplomacy with the Biden administration despite that Pyongyang called Biden a 'rabid dog' after Biden labelled Kim a 'thug'.
After Pyongyang tests a missile potentially capable of reaching the US, Dr Rajaram Panda explores the realistic -- and peaceful -- options before Donald Trump and the international community at large.
'The interesting point about the choice of the area for the surgical strikes is that it is the most sensitive part of the Line of Control,' says Colonel Anil A Athale (retd).
'The government's August 5 decision has impacted India-China relations, but it is not very significant or very different. Things like this have happened in the past.'
INS Vishakapatnam's ground attack and anti-ship capabilities are achieved through a bank of BrahMos cruise missiles that can be fired at targets up to 295 km away.
A weaker Russia, a sobered China at a time when Xi Jinping is manoeuvring to protect his third term prospects, a reunited West, a chaotic Pakistan. This is a perfect set of strategic circumstances. It is for India now to consummate this historic opportunity, argues Shekhar Gupta.
Two former senior United States diplomats, with more than 60 years experience in South Asia between them, have exhorted Washington to establish communication with Bharatiya Janata Party's prime ministerial candidate Narendra Modi sooner than later.
'The Pakistani denial was the greatest triumph of this strategy.' 'From now onwards Pakistan will always have to factor in the Indian reaction when it decides to back non-State actors like LeT,' says Colonel Anil A Athale (retd).
'What if Kim is alive as the latest reappearance suggests, but unable to rule?' 'Will his sister be installed as the leader to continue with the Kims's hereditary dynasty that began with the present ruler's grandfather?' asks Dr Rajaram Panda.
Security Expert Bruce Riedel, who in an interview with rediff.com shortly after the Pathankot terror attacks began said that the attack underscored the determination of jihadist groups in Pakistan to sabotage any attempt at detente with India, writes in the Daily Beast that despite the US putting the Jaish-e-Mohammad on the terrorist sanctions list years ago, the outfit continues to coddle the Pakistani army.
'In a part of the world where the government tells people what not to eat and what slogans to shout and not shout, it is beneficial to develop a mentality that is science minded and therefore open-minded.' 'That is possibly why the space programme has always had support from all sides of the political divide,' says Aakar Patel.
'The Pakistani military has encouraged and supported terrorist organisations, especially in Kashmir, as a means of waging proxy war against the Indian military and the country's superior economic resources.' 'The evidence is irrefutable with the recent killing of 46 paramilitary troops being just the latest example.'
'The biggest stumbling block will come from the traditionalists in the Pakistan army who have grown on a diet of anti-Indian propaganda and thinking on which much of their role -- both militarily and politically -- is centered upon.'
'It is imperative to restore the dignity and authority of the services chiefs. Erosion of this has resulted in lowering of service efficiency. It is also time to end the practice of taking seniority as the sole criterion for appointing chiefs.'
It is easy to foretell that negotiating a comprehensive and final agreement on the Iran nuclear issue is by no means an easy task. It involves hard negotiations, but the hardest step has been taken, says Ambassador M K Bhadrakumar, who was among the first group of foreigners to visit the the top-secret Arak plant hidden behind barren mountains south of Tehran.
He said the Pakistan Air Force was detected and the Indian Air Force responded instantly.
Pakistan has taken too much of a chance with Pulwama - with the wrong government in India, and at the wrong time.
'Make in India is one of the priorities identified by Minister Sitharaman and this is our great weakness,' warns Vice Admiral Premvir Das.
'When war is thrust on you as in 1962 and 1965 or is tempting as in 1971, ensure that all other fronts are kept quiet, leaving your army free to deal with one,' says Shekhar Gupta.
'No country can ever be free to make its choices and remain independent if it continues to wear borrowed plumes,' warn Lieutenant General Ashok Joshi (retd) and Colonel Anil A Athale (retd).
'How can Kashmir be demilitarised if the terrorist threat remains and Pakistan continues to incite elements in Kashmir to keep the internal situation unstable?' asks former foreign secretary Kanwal Sibal.
'Steve was the foremost strategic analyst on South Asia,' remembers Colonel Anil A Athale (retd).
Moving ahead with their new mantra -- Chalein Saath Saath: Forward Together We Go -- Prime Minister Narendra Modi and United States President Barack Obama on Tuesday vowed to deepen cooperation in every sector for the benefit of global stability and people's livelihoods over the next ten years.
'But India, increasingly, is not that far behind, which is a story I never expected to tell.'
The US president lauded the announcement on Twitter, writing "Great progress being made but sanctions will remain until an agreement is reached. Meeting being planned!"
Before migrating into the theatre command concept, it would be worthwhile to study the shortfalls experienced by the Tri Services Command in the Andaman and Nicobar islands and make good the deficiencies, suggests Commodore Venugopal Menon (retd).
Officials insisted that there were 'no military and civilian casualties at all'.
'Islamabad is only as big as a Delhi suburb.' 'How can a city with just two five star hotels and only one departure gate at their international airport be compared to Delhi with its sprawling airport?' Ambassador T P Sreenivasan finds the pulse of Pakistan after visiting Islamabad for the first time.
'I was present at a meeting where he decided to permit the IAF to strike at Pakistan positions in Kargil, with the caveat that they should not cross the LoC.' 'Confident that the Indian Army would succeed, Mr Vajpayee was positioning himself to tell the world after the Kargil conflict was won that India did not violate the 'sanctity' of the LoC,' recalls Ambassador G Parthasarathy, who served as India's envoy in Islamabad in that eventful year, 1999.
The bilateral and Quad summits, in which Prime Minister Modi played a significant role, has sent the right message to China, observes Ambassador T P Sreenivasan.
The joint statement issued after Prime Minister Narendra Modi and President Barack Obama's first-ever summit is high on intent and ambition. Notably missing from the statement is India's refusal to be America's partner in its war against ISIS.
'Today the Chinese think they can slap India, and there will be no consequences.' 'They must be made to feel the consequences through any and all means,' says Rajeev Srinivasan.
'In his eulogy at Sandy's memorial service, President Clinton recounted the unusually hot US Independence Day, July 4, 1999, when most of official Washington was more interested in watching fireworks than international diplomacy. Sandy insisted that Clinton confront Pakistan Prime Minister Nawaz Sharif in no uncertain terms.' Former US Assistant Secretary Raymond E Vickery, Jr salutes Sandy Berger, Clinton's National Security Adviser, as a true friend of India.