The paper analyses factors and conditions which determine the level of cooperation between Lithuania and Poland and which,according to their effect,are divided into driving forces and ob­ stacles. The maindriving forces are associated with the Euro-Atlantic: objectives of both countries that affect the developmental trends and with the EU membership. They include different bi­ lateral and multilateral agreements, participation in the institutions operating within the Baltic: Sea macro-region,and in the pursued strategies,as wellas the possibilities to benefit from the EU regional policy instruments. The obstacles for cooperation are associated with specific peculiari­ ties of economic development of both countries.They cover the peripheral nature of Lithuanian economy as well as the inequality of economic potential of both countries.Inaddition,the "emo­ tional charge", hindering the realization of the idea of strategic: partnership,is also considered as an obstacle for further development of the discussed cooperation.

The paper analyses factors and conditions which determine the level of cooperation between Lithuania and Poland and which,according to their effect,are divided into driving forces and ob­ stacles. The maindriving forces are associated with the Euro-Atlantic: objectives of both countries that affect the developmental trends and with the EU membership. They include different bi­ lateral and multilateral agreements, participation in the institutions operating within the Baltic: Sea macro-region,and in the pursued strategies,as wellas the possibilities to benefit from the EU regional policy instruments. The obstacles for cooperation are associated with specific peculiari­ ties of economic development of both countries.They cover the peripheral nature of Lithuanian economy as well as the inequality of economic potential of both countries.Inaddition,the "emo­ tional charge", hindering the realization of the idea of strategic: partnership,is also considered as an obstacle for further development of the discussed cooperation.