MOSCOW (Reuters) – Foreign investors from “unfriendly” countries selling stakes in Russian assets may have to do so at half-price or less, the finance ministry said on Friday, with the Russian budget potentially taking a 10% cut of any transaction. Since Moscow sent its army into Ukraine in February, many Western companies – from energy producers to food and clothing chains – have left Russia. Minutes from a meeting of a government commission monitoring foreign investment listed a set of measures that could apply to “foreign persons associated with foreign states that commit unfriendly acts ag…