5 Scenarios For Ukraine After Russia Invasion

Although Russia claims it has full air superiority, Ukraine's air defences around the capital Kyiv and in other areas appear to be degraded but still working, Western officials say.

Russia's invasion of Ukraine on February 24 shocked the world but President Vladimir Putin shows no sign of pulling back.

Here are possible scenarios for the weeks and months ahead, according to Western government sources and think-tank experts.

1) Military quagmire

Ukrainian forces have resisted Russia's invasion so far, defeating an attempt by paratroopers to seize the capital in the opening days and keeping control over major cities such as Kharkiv and Mariupol.