Jury is still out
Throughout this crisis, the Western powers have steered away from military intervention, with U.S. President Barack Obama reiterating last week that there would not be any "military action" from his country.
"The European Union uses soft power. Soft power number one was the association agreement with Ukraine. Soft power number two when the situation escalates is to use sanctions. Have they worked or not? I think the jury is still out," Alexander Stubb, prime minister of Finland, told CNBC.
Yet now some of Ukraine's allies – particularly those formerly under the Soviet Union's sphere of influence - are calling for more action.
"We need to help Ukraine to battle it (Russia) back…and to help militarily, especially with military material, to help Ukraine defend itself. Because today Ukraine is fighting a war on behalf of all Europe," Dalia Grybauskaitė, president of Lithuania, told CNBC.