After a day of pomp and grandeur, which saw US President Donald Trump and Indian Prime Minister Narendra Modi exchanging an embrace and praising each other at a stadium with some 125,000 fans, issues of geopolitics are expected to be high on the agenda when both meet on Tuesday morning.Ajit Pai, the US Federal Communications commission chief who is accompanying Trump, has made it clear he will be discussing the issue of 5G infrastructure and, potentially, the role of the Chinese telecom giant…