The acting chief executive of Ukraine's state broadcaster has been forced to sign a resignation letter - by MPs who broke into his office.

The group of men, from the far-right Svoboda party, were angry with Oleksandr Panteleymonov's decision to broadcast a ceremony from the Kremlin on Tuesday.

It showed Russian President Putin signing a bill to make Ukraine's Crimea region part of Russia.

The MPs filmed themselves beating Mr Panteleymonov over the head until he gave in to their demands.

Rebecca Donovan reports.