The leader of Germany's Social Democratic Party (SPD), Marin Schulz, resigned from his post on Tuesday. His resignation went into effect immediately. Schulz proposed the head of SPDís parliamentary fraction, Andrea Nahles, as his successor, but itís now up to the partyís congress to decide on its leadership. The resignation came days after SPD struck a ďgrand coalitionĒ deal with German Chancellor Angela Merkelís conservative bloc. The deal has potentially paved the way for Germany to finally form a government after months of political instability following the indecisive parliamentary elections in September. Schulzís resignation, however, does not mean he will leave the party, and he can take a ministerial post if the government is actually formed.