Barack Obama

The United States takes action over the Ukraine crisis by imposing sanctions on seven individuals with close ties to Russian President Vladimir Putin, including the head of energy company Rosneft.

Western leaders agree to extend sanctions against Russia for failing to abide by the Ukraine peace accord agreed in Geneva.

Kiev reportedly suspends its “anti-terror operation” in eastern Ukraine after five pro-Russian militants are killed and Russia orders military exercises on the Ukraine border.

As Kiev announces the end of an Easter truce and re-launches its “anti-terrorist operation” in eastern Ukraine, Russia warns it will retaliate if its citizens are threatened.

President Putin pledges to do all he can to protect fellow Russians living in what he’s called “Novorossiya” – the historic name for part of Ukraine. How great a threat do his words represent?

“He should be ashamed to meet a leader that has four grown women locked up” – the message from two Saudi princesses to President Obama as he meets with their father, King Abdullah of Saudi Arabia.

Barack Obama outlines details of his plan to end the governments bulk collection of phone data, including procedure on how officials will now have to request data from phone companies.

In 2012 the Ukrainian navy revived a Soviet project that trained combat dolphins – but following the annexation of Crimea many are wondering what side they will flip on?

Barack Obama pitches the US as a source of energy that would weaken the European Union’s dependence on Russia for oil and gas “in the light of what’s happened”.

In the wake of the annexation of Crimea by Russia, many are wondering who is next on President Vladimir Putin’s list?

David Cameron and other European leaders sign an association agreement with Ukraine that extends the EU’s sphere of influence but risks antagonising Russia.