(ANSA) - ROME - Thousands of migrants stranded at the borders along the Balkan route are facing increasingly difficult conditions, because of the restrictions imposed in the past two days by Macedonia, Serbia, Croatia and Slovenia, according to Oxfam, which calls for the earliest possible reopening of borders to all people arriving from Greece, in order to avoid worsening the humanitarian crisis. ''On November 20, several countries along the Balkan route are allowing only migrants from Syria, Afghanistan and Iraq to cross borders'', says Sara Tesorieri, Oxfam migration policy advisor in Europe. ''People belonging to other nationalities, who are seeking protection in Europe, are locked out at the present time. This decision is likely to leave thousands of people stranded and facing an uncertain future''. Oxfam also points out that it has launched a petition, ''That's enough! Migrants are not invaders'', to call on the EU member countries to accept their refugee quota and draw up an effective plan to address the needs of those who are fleeing war, hunger and persecution. (ANSA).