Prime Minister Narendra Modi may meet US President Donald Trump on the sidelines of the G-20 summit in Argentina this week, in what will be the PM’s last multilateral summit before the 2019 general elections.The meeting, if it materialises, will be Modi’s first meeting with Trump since November 2017 when the two met in Manila on the sidelines of the East Asia summit Recently, Trump had declined India ’s invitation to attend the Republic Day in 2019 as the chief guest owing to scheduling issues. India-US relations have faced challenges of late owing to differences over trade, visas, Iran and Russia, even as strategic ties have received a boost in the past one year through the Indo-Pacific partnership and signing of the Communications Compatibility and Security Agreement.The Modi-Trump meet is being planned following Modi’s forward looking meeting with US Vice-President Mike Pence in Manila earlier this month, said people aware of the matter. During his meeting with Pence, Modi invited the US defence industry to set up units in India and shared views on free and open Indo-Pacific region besides emphasising on stronger action against Pakistan based terrorist groups.Another G-20 highlight could be a meeting of PM Modi with Russian President Vladimir Putin and Chinese President Xi Jinping. India, Russia and China are discussing the possibility of holding the maiden Russia-India-China summit in Argentina which has so far met at the level of foreign ministers annually.BRICS leaders are also planning to meet on the sidelines of the summit. Modi is also expected to meet Xi and Putin separately in Argentina. This will be the fourth Modi-Xi meet this year since the Wuhan summit.