Due to the integration to the European Union Poland and Lithuania intend to introduce overall visa obligation for the Russian citizens. Currently the Russians entering Poland may present at the border a voucher, an invitation, or an AB stamp, which entitles them to business travels. Lithuania maintains visa reliefs for the inhabitants of Kaliningrad and the Russians travelling from and to the enclave. The decisions encounter an opposition on the Russian side, which is of the opinion that the activities will result in the isolation of the enclave. This is why Moscow insists on the maintaining of a visa free movement between the enclave and the rest of Russia.