European stocks climbed in volatile trade Monday, but with investors trading cautiously ahead of potentially market-moving events this week, including the Dutch election, the U.K.'s Brexit bill vote and a U.S. interest-rate decision.

Stocks closed marginally higher after switching between small gains and losses on Monday as investors refrained from making sizable bets ahead of a Federal Reserve meeting that is widely expected to deliver an interest-rate increase.

Stocks closed marginally higher after switching between small gains and losses on Monday as investors refrained from making sizable bets ahead of a Federal Reserve meeting that is widely expected to deliver an interest-rate increase.