English to Slovak Other Government / Politics International relations

V nasledovnej vete som si neni ista ako presne prelozit frazu INTERNATIONAL APPEAL. Jedna sa v tejto vete o ziadost alebo peticiu, zalobu alebo prosbu? Vedel by mi niekto poradit, resp. ma uistit?

Jedna sa o nasledovne:

we cordially invite you as a member of parliament to join the international appeal for the establishment of a United Nations Parliamentary Assembly. To date, the appeal has been signed by around .......