New Delhi, Sept. 20 -- Donald Trump has warned Russia Vladimir Putin of 'big trouble' after Russian jets entered Estonian airspace. US President Donald Trump told reporters he will soon be briefed by aides on the reported incursion. "I don't love it," he said, adding, "I don't like when that happens. It could be big trouble, but I'll let you know later."

Donald Trump has warned there 'could be big trouble' after Russia flew three fighter jets into neighbouring Estonia in a 'reckless' and 'brazen' attempt to intimidate the Baltic state.

Estonia summoned a Russian diplomat to protest after three Russian fighter aircraft entered its airspace without permission Friday and stayed there for 12 minutes, the Foreign Ministry said. It happened j...