More than 170,000 Russians are believed to have fled their country in just seven days after Vladimir Putin ordered a partial-mobilisation of reservists, British defence chiefs said on Thursday.
They stressed that they disproportionately included the “better-off and well-educated”.
The partial-mobilisation of 300,000 reservists has sparked protests in Russian cities.
Reports have also emerged that some men who should not be called up, due to their age or not being a reservist, have been.