Is Europe already at war? A Russian strike on Ukrainian civilians has horrified the continent. Some think it is time to accept we are all in the line of fire – and must respond.
Putin does not want peace, experts say

Glossary
Palm Sunday - The Christian feast falling on the Sunday before Easter. It celebrates Christ's entry into Jerusalem.
Sumy - A city in northeastern Ukraine, with a population of 256,000.
European Commission - The executive body of the EU, responsible for suggesting new EU laws and overseeing their implementation.
Vladimir Putin - Russia’s ruler since 2000. He is a strong opponent of the West.
North Korean - From North Korea, a country formed in 1945 when Japanese-occupied Korea was split between a Communist government in the north and a capitalist one in the south. Today it is extremely reclusive, and hostile to the West.
USSR - The United Socialist Soviet Republic, the USA’s main rival in the Cold War before it collapsed and broke up into a number of smaller states in 1991.
Soviet - Relating to the Soviet Union, a powerful group of communist republics, the biggest being Russia, that existed from 1922 to 1991.
Chechnya - A republic of Russia situated in the North Caucasus. It is home to indigenous Chechens, mostly of Muslim faith.
Georgia - A state in the southern USA. Also a country at the intersection of Europe and Asia.
Belarus - Belarus is an eastern European state that is a close ally of Russia. Run by Alexander Lukashenko, it is known as “the last dictatorship in Europe”.
Baltics - The three countries on the eastern coast of the Baltic Sea: Estonia, Latvia and Lithuania.
Isolationist - Preferring the policy of remaining separate from the affairs of other countries.
Sabotage - Deliberately ruin, destroy or obstruct something — especially to further your own ambitions.
Infrastructure - The basic systems and services that a country needs to keep it going.