Modi said dithering to take action against terrorists and their supporters will be like encouraging terrorism.
Villarreal's Argentine playmaker Juan Roman Riquelme is set return to his former club Boca Juniors on loan until the end of the season.
Barack Obama and Michelle showed off their moves at the end of a state dinner in Argentina.
Modi will also meet Chinese President Xi on the sidelines of the summit. It would be their fourth meeting in last seven months.
Argentina president Mauricio Macri has personally contacted star striker Lionel Messi and urged him not to call it quits to the national team.
Modi, who came to Hangzhou from his first visit to Vietnam, met Xi and held talks on a host of issues including bilateral tensions between the two countries over a raft issues.
From United States President Donald Trump and Russian President Vladimir Putin, Modi met them all.
"Hello Hangzhou! PM lands in China to attend the G20 Summit," Modi tweeted.
Hundreds of Argentines protested in the pouring rain on Saturday, demanding that soccer star Lionel Messi return to Argentina's national team after he unexpectedly quit following a loss in the regional Copa America final.
After the three bilateral meetings, Modi would participate in the three separate sessions of the Nuclear Security Summit, which kicked off with a White House dinner on Thursday night.
The fashion police fell in love with the yellow Emilio Pucci gown the US First Lady wore for Modi's White House visit. But then the former Slovenian model rarely gets it wrong.
Argentina have cancelled their final World Cup warmup match against Israel, striker Gonzalo Higuain said on Tuesday, as political pressure grew ahead of Saturday's scheduled fixture in Jerusalem.
The meeting with Xi is being held amid the ongoing trade war between the United States and China.
43.2 million people follow the Indian premier on the social media platform.
Khan said, "If India has evidence or actionable intelligence, they should give it to us and we will take action."
Informing the world leaders of measures taken by him, Modi said India will continue to accord a high national priority to nuclear security through strong institutional framework, independent regulatory agency and trained and specialised manpower.
The keynote address will be given by United States President Donald Trump
News of all that's transpired on and off the football field
'The year in pictures' treks across the globe, looking back on the moments that shaped 2016. From the United States presidential race, to demonetisation in India to the refugee crisis, the news has kept pouring in. Here are our top 50 moments from the world.
