During the 1620s, France was threatened internally by a series of Huguenot rebellions, and externally by Habsburg possessions on their borders in the Spanish Netherlands, Franche-Comté, Alsace, Roussillon and Lorraine (see Map). Prior to 1635, they sought to weaken both branches of the Habsburgs by financing their opponents, including the Dutch, clients in Northern Italy and the Grisons, the Ottomans, the Venetian Republic, Transylvania, and Sweden. After 1635, they intervened directly through anti-Habsburg alliances with the Dutch and Swedish, while supporting insurgents in Portugal, Catalonia and Naples