By Kirsty Wark & Hollie Cole
BBC Newsnight
Arsenal footballer Oleksandr Zinchenko says he would leave the UK to fight in Ukraine if he was called up.
The 27-year-old told BBC Newsnight he has donated about £1m to help people in his home country since Russia's full-scale invasion in 2021.
He said Ukraine has become a "shield" for Europe and called for more support.
On Wednesday, the country's president signed into law a bill lowering the military mobilisation age from 27 to 25.
This would allow the country to call up more people to replenish its reserves and comes after President Volodymyr Zelensky said in December that the country would need 500,000 more soldiers to be mobilised.