Saudi Arabia and Kuwait on Thursday announced a return of their ambassadors to Lebanon in a sign of improving ties that hit rock bottom last year when the kingdom and other Gulf states withdrew their envoys. Saudi Arabia and fellow wealthy Gulf states were once major donors for Lebanon but relations have been strained for years by the growing influence of the Iran-backed Hezbollah movement. The Saudi foreign ministry said its ambassador returned in response to calls by “moderate” Lebanese political forces and after remarks by Prime Minister Najib Mikati regarding “ending all political, militar…