Russian president Vladimir Putin has completed his annexation of Crimea after signing a law making the Black Sea peninsula part of the Russian Federation.

Tensions remain high in Ukraine as Kiev debates whether to pull its troops from the Crimean peninsula, where Russian forces have seized Ukrainian ships and evicted soldiers from military bases. Crimeans have lined up eagerly to apply for Russian passports. Russia claimed that some Ukrainian troops had switched sides to join the Russian military.

Ukrainian servicemen carry their belongings out of naval headquarters in Sevastopol, past armed Russian troops
Ukrainian servicemen carry their belongings out of naval headquarters in Sevastopol, past armed Russian troopsReuters
A Ukrainian naval officer passes by armed men, believed to be Russian servicemen, as he leaves the naval headquarters in Sevastopol
A Ukrainian naval officer passes by armed men, believed to be Russian servicemen, as he leaves the naval headquarters in SevastopolReuters
Ukrainian servicemen carry bags and a computer as they leave a military base in Perevalnoye, near the Crimean city of Simferopol
Ukrainian servicemen carry bags and a computer as they leave a military base in Perevalnoye, near the Crimean city of SimferopolReuters
People queue to apply for Russian passports in the Crimean port of Sevastopol
People queue to apply for Russian passports in the Crimean port of SevastopolReuters
A member of pro-Russian forces looks through a wall after breaking into the naval headquarters in Sevastopol
A member of pro-Russian forces looks through a wall after breaking into the naval headquarters in SevastopolReuters
Pro-Russian supporters take over the naval headquarters in Sevastopol
Pro-Russian supporters take over the naval headquarters in SevastopolReuters
Russian troops march towards a military base in Perevalnoye
Russian troops march towards a military base in PerevalnoyeReuters
Russian troops enter the Perevalnoye barracks
Russian troops enter the Perevalnoye barracksReuters
Troops believed to be Russian carri rocket-propelled grenade launchers
Troops believed to be Russian carri rocket-propelled grenade launchersReuters
Russian Black Sea Fleet submarines docked in Sevastopol
Russian Black Sea Fleet submarines docked in SevastopolReuters
A Russian ship at anchor blocks the entrance to the harbour in Sevastopol
A Russian ship at anchor blocks the entrance to the harbour in SevastopolReuters
Honour guards open the doors for Vladimir Putin before the Crimea signing ceremony in the Kremlin
Honour guards open the doors for Vladimir Putin before the Crimea signing ceremony in the KremlinReuters
Putin tells a rally in Moscow's Red Square: 'We are together'. Behind him are parliamentary speaker Vladimir Konstantinov (left) and Crimea's prime minister Sergei Aksyonov 
Putin tells a rally in Moscow's Red Square: 'We are together'. Behind him are parliamentary speaker Vladimir Konstantinov (left) and Crimea's prime minister Sergei Aksyonov Reuters
Ukrainian servicemen at a military base in the Crimean town of Belbek watch a TV broadcast of President Vladimir Putin signing a law ratifying the treaty that makes Crimea part of Russia
Ukrainian servicemen at a military base in the Crimean town of Belbek watch a TV broadcast of President Vladimir Putin signing a law ratifying the treaty that makes Crimea part of RussiaReuters
Ukrainian soldiers set up camp close to the Russian border in east Ukraine
Ukrainian soldiers set up camp close to the Russian border in east UkraineReuters
A Ukrainian soldier aboard an armoured personnel carrier at a military camp in east Ukraine
A Ukrainian soldier aboard an armoured personnel carrier at a military camp in east UkraineReuters
Members of a
Members of a "Maidan" self-defence battalion train at a Ukrainian interior ministry base near Kiev. The first 500 volunteers arrived at the base for training to qualify for service in the newly created National Guard to boost the military in the face of Russia's takeover of the Crimea peninsulaReuters
A Ukrainian soldier at a checkpoint near the village of Salkovo, in the Kherson region adjacent to Crimea. His tattoo reads: 'If you want peace, prepare for war'
A Ukrainian soldier at a checkpoint near the village of Salkovo, in the Kherson region adjacent to Crimea. His tattoo reads: 'If you want peace, prepare for war'Reuters