Asian equities started the week mostly lower on Monday following declines on Wall Street last week and as escalating tensions between Ukraine and Russia weighed on sentiment.

Developments in the Crimean peninsula were in the spotlight after pro-Russian separatists took control of the Ukrainian city of Slaviansk on Saturday, prompting a warning by Ukraine to disarm or face its military forces. In response, the United Nations Security Council kicked off an emergency meeting early on Monday to discuss the crisis.