Russia has no reliable data showing the extent to which foreign investors are interested in Russian assets, Central Bank Governor Elvira Nabiullina said on Friday, acknowledging that high rates were an enticing draw for non-residents.

With U.S. support for Ukraine in doubt, Kyiv's European allies are weighing whether to seize $300 billion in frozen Russian assets and use the money to compensate Ukraine, support its military and help rebuild shattered homes and towns.

Russia's central bank kept its key rate at 21% today, locking in two-decade-high borrowing costs as it battles rampant inflation.