US President Donald Trump's top trade advisor Peter Navarro has called the show of unity between Prime Minister Narendra Modi, Russian President Vladimir Putin and Chinese President Xi Jinping 'troublesome', saying that the Indian leader needs to be with Washington, Europe and Ukraine, not with Russia.

Navarro's remarks came after the three leaders publicly displayed bonhomie on the sidelines of the Shanghai Cooperation Organisation (SCO) summit in Tianjin on Monday.

"It's troublesome. It's troublesome" Navarro said at the White House Monday when asked about the 'show of unity' between Modi, Xi and Putin.