Russian President Vladimir Putin has warned his Ukrainian counterpart, Petro Poroshenko, that he will implement "protectionist measures" if Ukraine signs an agreement for closer ties to the EU.
However, Mr Putin also indicated that he would welcome any proposals to de-escalate the situation in the east of Ukraine, where there have been bloody clashes between Ukrainian forces and pro-Russian separatists.
More top news
Flights to the Egyptian capital have been halted for seven days.
A fine start to Sunday
Temperatures in the UK will peak Tuesday, Wednesday and into Thursday.