MIGRATION AS SECURITY THREAT TO EU

European union (EU) since the end of cold war did not tackle with more tangible and serious question in security sector than question of migration and especially illegal migration through its Schengen borders. Control of EU´s external borders is becoming of increasing importance due to significant increase of migrant flows from Middle East and North Africa. Migration pressure on Schengen borders and especially of illegal migration does increase security risks for EU. Those are linked not only with potential infiltration of terrorist groups through the Schengen border but also to increased right and left wing extremist groups and their activities, which are increasing divissions in societies and do add to political radicalisation. In this paper we will try to deal primarily with illegal migration. First we will provide general definitions related to migration and look into EU´s strategic documents and how migration is defined in relation to EÚ. We will go through some mechanism EU does have on its disposal in order to deal with migration on its schengen border. In second part of this paper we will deal with migration routes, main causes for migration as well as with impact those movements of migrants do have on country of origin as well as recipient countries. In conclusion we will try to asses overall impact of migration on EU from long term perspective.