Trump was optimistic that the Palestinians would again show willingness to talk if countries that supported them followed the course of the UAE. The Palestinians have boycotted the US government since Trump unilaterally recognized Jerusalem as the capital of Israel in late 2017 and moved the US embassy there from Tel Aviv in May 2018. You accuse Trump of a unilateral pro-Israeli policy.
The Kingdom of Bahrain is a close ally of Saudi Arabia and the Emirates. The three countries jointly imposed the blockade on their Gulf neighbor Qatar in 2017.
5th US fleet in Bahrain
Bahrain also has close ties with the United States. The 5th US fleet is stationed there. Last year, the Gulf state and Washington hosted a controversial economic conference for the Palestinians in its capital, Manama.
While Bahrain, like its Arab Gulf neighbors, is ruled by a Sunni ruling house, the majority of the population is Shiite. Traditionally, the country has close ties with Iran, which is also Shiite, and Israel’s archenemy.
In 2011, in the wake of the Arab uprisings, protests also broke out in Bahrain, calling for democratic reforms and measures to combat discrimination against Shiites.
Saudi Arabia and other Gulf states then sent troops. These stood by the ruling family when they ended the protests with violence. It continues to crack down on Shiite opposition members with a hard hand.