Prime Minister Narendra Modi on Thursday arrived in Argentina capital of Buenos Aires to attend the G-20 summit where he will discuss ways to meet the new and upcoming challenges of the coming decade with other world leaders, including US President Donald Trump. After a 24hr journey, PM Modi arrives in Buenos Aires for the G20 Summit. The next 48 hrs will witness PM participation at the Summit as well as in many other plurilateral and bilateral meetings on the margins of the Summit, MEA spokesperson Raveesh Kumar tweeted.