Russia is to bring in legislation that will mean individuals found guilty of doping are punished under the country's criminal code, according to Sports Minister Vitaly Mutko.
If India signs the deal, it would be the second customer of the prized missile system after China which had struck a $3 billion contract last year.
The Court of Arbitration for Sport (CAS) on Tuesday reduced by nine months former world number one tennis player Maria Sharapova's two-year doping ban.
Putin, who was received by External Affairs Minister Sushma Swaraj on his arrival, went straight to Modi's official Lok Kalyan Marg residence where the two leaders had a one-on-one meeting.
Russian President Vladimir Putin said on Friday World Anti-Doping Agency (WADA) records leaked by hackers raised a lot of questions with healthy athletes seemingly taking banned substances, TASS news agency reported.
The Russian shipyard which upgraded INS Sindhurakshak, on Wedneday said it had installed advanced weaponry, both Indian and foreign systems, to enhance the submarine's "combat capability and safe operation".
The incident took place as residents and visiting soccer fans from around the world thronged the centre of Moscow on a balmy summer evening.
'No matter what Modi may boast about 'new India', the geopolitical reality is that India's stature diminishes when it needs a small country like Saudi Arabia under an autocratic ruler to help out with what is arguably one of the most critical templates of its diplomacy,' says Ambassador M K Bhadrakumar.
'It was not an agreement, this was his proposal and of course it (then) went to the vote at the (FIFA) executive committee'
The air strike was launched after the Russian forces in Syria received intelligence that a meeting of Islamic State leaders was being planned, the defence ministry said.
'The situation with Sharapova could be resolved after April 21 when we meet with the head of the international federation. After that all should be become clear. It is too early to talk about Sharapova competing at the Olympic Games'
The Russian Sports Ministry said on Tuesday it was open for closer cooperation with the World Anti-Doping Agency (WADA) in order to eliminate any irregularities committed by the Russian anti-doping watchdog and its accredited laboratory.
CAATSA was aimed at Moscow and not intended to damage the military capabilities of its 'allies and partners', US said.
World athletics' governing body decided on Friday to maintain its doping ban on all Russian athletes, Sky News reported, quoting unnamed sources, leaving the country's hopes of competing in the Rio Olympics dependent on Olympic chiefs giving special dispensation at a meeting next week. The Council of the International Association of Athletics Federations (IAAF) was meeting in Vienna to decide whether to lift the ban after hearing from a task force that significant doping problems still existed in Russia. The suspension was first imposed in November and extended in March. A spokeswoman for Russia's athletics federation said she could not confirm the reports that the ban had been upheld.
In an apparent snub to India, a Russian ground forces contingent on Friday arrived in Pakistan to participate in the first-ever joint military exercises starting from Saturday.
BRICS has no plans to form a military and political alliance, Russian President Vladimir Putin said on Wednesday, in an apparent effort to allay apprehensions of the West.
Lamine Diack, the former head of world athletics, has been placed under formal investigation in France on suspicion of corruption and money laundering following a complaint from the World Anti-Doping Agency (WADA).
England and Tunisia players swatted away swarms of gnats that flew into their eyes and mouths during their opening World Cup game in Russia's riverside city of Volgograd on Monday.
The Russian Athletics Federation (ARAF) said on Monday four athletes had tested positive at the Russian Winter Indoor Athletics Championships in February.
'The surge of Saudi nationalism is the last thing Washington wants,' says Ambassador M K Bhadrakumar.
The $10.5 billion arms and equipment deal helped to arrest the recent drift in the 'special and privileged' strategic partnership, observes Brigadier Gurmeet Kanwal (retd).
The MiG-35 is Russia's most advanced 4++ generation multipurpose fighter jet developed on the basis of the serial-produced MiG-29K/KUB and MiG-29M/M2 combat aircraft.
Here are photos from his life and career as India's pre-eminent defence scientist and one of the country's most popular president
Russia is a strong and reliable friend of India and both countries have a "truly strategic" partnership, PM Modi on Thursday told President Vladimir Putin.
Summary of sports events and persons who made news on Tuesday
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'With Pakistan's 'first use doctrine' threatening the use of nuclear weapons early in a war with India, the S-400 will shield vulnerable targets like Delhi and Mumbai, complicating Pakistan's targeting calculations.'