Ukraine's President Petro Poroshenko called for a temporary ceasefire in eastern Ukraine to "provide time to seek agreement on a peace plan."
In a statement to security chiefs, Poroshenko said he had set government forces the task of regaining full control of Ukraine's border with Russia this week.
Once this was done, he said, a temporary ceasefire should be observed and efforts made to agree on a peace plan.
More top news
The Foreign Secretary described Jeremy Corbyn as a "mugwump" - but what does that obscure word mean?
Readers are shunning e-books in favour of their traditional counterparts, which sold last year at their highest level since 2012.
Glaucoma is the biggest cause of permanent blindness and affects 60 million people around the world - a tenth of whom are completely blind.