Brexit deal could break up the UK: PM faces furious backlash over Brussels agreement
Sources close to Brexiteer ministers played down the prospect of walkouts
Tsipras holds talks with Sisi and Medvedev in Palermo
The two leaders also discussed the role of Greece and the EU over the coming period in relation to the Libyan issue
Stoltenberg opposes EU defence duplicating NATO, Putin likes the idea
Trump has repeatedly berated European NATO members like Germany for failing to meet spending targets set by the alliance