The Siege of Bangkok was a key event of the Siamese revolution of 1688, in which the Kingdom of Siam ousted the French from Siam. Following a coup d'état, in which the pro-Western king Narai was replaced by Phetracha, Siamese troops besieged the French fortress in Bangkok for four months. The Siamese were able to muster about 40,000 troops, equipped with cannon, against the entrenched 200 French troops, but the military confrontation proved inconclusive. Tensions between the two belligerents progressively subsided, and finally a negotiated settlement was reached allowing the French to leave the country.