KIEV, Ukraine — Billionaire chocolate magnate Petro Poroshenko claimed victory in early presidential elections Sunday after two election polls showed him winning 56 percent of the vote, well above the threshold to avoid a second round. Poroshenko immediately vowed to hold new parliamentary elections, defuse a separatist uprising in the east, move the country towards Europe, and restore relations with Russia. His election is an important step toward pulling the country back from the abyss, but it's only part of a long process as Ukraine seeks to end the political crisis that deepened when previous president Viktor Yanukovych fled to Russia in February after more than 100 died in violent protests against him.