Forced out of their Sheikh Jarrah homes after losing a property-rights case to Jewish families, their situation has drawn international censure.
Athens hopes the gallery, which opened Saturday, will push the British Museum to relinquish its half of the famed Parthenon Marbles.
The tentative agreement, which must be ratified by both nations' legislatures, creates a framework for bilateral cooperation.
US president discussed Armenian massacre, democracy, and EU membership.
Exhibition of 19th-century visions of the 'exotic' Orient recalls the heavy history of colonialism.