Explosions are heard near major Ukrainian cities after Russia launched its pre-dawn attack.

The foreign secretary defends measures imposed on Russia, describing them as "severe".

Multiple government and company websites go down in the largest cyber-attack since the crisis began.

A 27-year-old man who launched a hostage situation at an Apple store has died in hospital.

The Duchess of Cambridge is on a two-day trip to learn about schemes fostering early years development.

Alexander Zverev is thrown out of the Mexican Open for "unsportsmanlike conduct" after attacking the umpire's chair at the end of a doubles match.

The Russian leader has been keeping the world guessing. The BBC's Moscow correspondent looks for clues.

As Vladimir Putin orders troops into eastern Ukraine, here's a look at how things got to this point.

Up to 190,000 troops are positioned near Ukraine's borders.

What you should know about Russia's plans to deploy soldiers to two breakaway regions.

In an hour-long televised speech, the Russian leader made accusations, grievances and challenges.

The US, UK and others have imposed sanctions on Russia and more could follow.

US officials have warned of "false flag" incidents - what's the evidence?

BBC News looks into several claims the Russian president made about Ukraine.

President Putin has made changes to protect the Russian economy since it first was hit by sanctions in 2014.

Western governments think Russian troops could go much further than east Ukraine.

The BBC's Sarah Rainsford travels with Ukraine's leader amid his efforts to prevent a Russian invasion.

Volodymyr Zelensky came to power vowing to end a war in eastern Ukraine that has only intensified.

Nato allies suspect that Russia will use a false flag attack as a pretext to invade Ukraine

Soldiers scan for snipers and fear being hurt or killed as military activity in the area increases.

Some families arriving in Russia from eastern Ukraine told the BBC they were afraid, and worried about food and accommodation.

Beijing does billions of dollars of trade and business with both Kyiv and Moscow.

The idea that Russia is to blame for the crisis in Ukraine is an invention by the West, Russia's foreign ministry says.

Russian president presses Sergei Naryshkin during a meeting with top security officials.