permission

The lenses and optical technology sold by Beck Optronics are specifically listed as goods that either cannot be legally exported to Russia, or that need permission from UK authorities before any sale can take place.

Reports of the strikes come after Ukraine was given permission from Washington to fire US-supplied missiles at Russian territory.

On Tuesday, Ukraine fired US-supplied longer-range missiles at Russian territory for the first time, a day after the US gave permission for their use.

On Tuesday, Ukraine fired US-supplied long-range missiles into Russia for the first time - a day after Washington gave it permission to do so.

Ukraine has fired US-supplied longer-range missiles at Russian territory for the first time, the Russian government said, a day after the US gave its permission for such attacks.