Trump is breaking my heart. I hope he is merely uninformed.

I’m still trying to read this as healthy skepticism from a man who has not yet seen evidence.

Donald Trump defends Vladimir Putin over Alexander Litvinenko murder

Mr Trump waded into the case saying he had seen “no evidence” of Mr Putin’s involvement, adding: “They say a lot of things about me that are untrue too.”

The front-runner for the Republican presidential nomination has previously said he felt a “great honour” when Mr Putin praised him as an “absolute leader”.