The world watches as Trump and Putin meet in Helsinki

The world's two disrupters-in-chief started the day trying to out-disrupt each other - President Putin's opening gambit, arriving an hour late, leaving President Trump twiddling his famously small thumbs.

But at their joint press conference it was all talk of co-operation and understanding, President Trump criticising not Russian interference in the US elections, but the investigation into it, describing the probe as a "disaster for our country".