European stock markets trimmed last week's gains to close lower on Monday, off the back of weak Chinese data and heightening tension in Ukraine.

The pan-European FTSEurofirst 300 index provisionally closed down 1.1 percent at 1,293.10 points, with Russia's Micex index also turning lower by 0.7 percent as relations between the West and the Kremlin looked set to dominate markets this week once more.