US Secretary of State Marco Rubio on Saturday called India a natural partner and invited Prime Minister Narendra Modi to Washington, turning the page at least rhetorically on friction despite new-found US warmth towards China.One week after joining US President Donald Trump on a state visit to Beijing, Rubio – visiting both Asian powers for the first time – flew to New Delhi and met Modi for more than an hour, inviting the premier to visit the White House soon.“The world’s oldest democracy in...