Saudi Arabia on Wednesday beheaded one of its citizens for drug trafficking, adding to what Amnesty International has called a "macabre spike" in the kingdom's executions this year.

The sentence against Khalid al-Rowaili was carried out as Jakarta summoned Saudi Arabia's ambassador over the execution a day earlier of an Indonesian domestic worker for murder.

Saudi-led coalition air strikes hit rebel targets in and around Yemen's main southern city of Aden on Wednesday as clashes with forces allied with fugitive President Abedrabbo Mansour Hadi intensified.

Coalition warplanes targeted rebel positions west of the port city, in Ras Imran, where heavy clashes have been raging as the Huthi rebels try to advance towards the city's strategic refinery, a military source said.

Saudi Arabia and Egypt are considering holding "large-scale" military maneuvers after launching air strikes on Yemeni rebels who have been slapped with a U.N. arms embargo and sanctions.

In a possible sign the Saudi-led air campaign against the Shiite rebels may expand into a ground operation, Cairo said it and Riyadh were mulling the exercises in Saudi Arabia, with other Gulf countries participating.

Jakarta summoned the Saudi Arabian ambassador Wednesday to protest the beheading of an Indonesian domestic worker and complain that her family and consular staff were not given prior notice of the execution.

Saudi authorities said Siti Zainab was executed Tuesday in the Muslim holy city of Medina after being convicted of stabbing and beating Saudi woman Noura al-Morobei to death in 1999.

Pakistani teacher Saima Tanveer betrays little emotion as she recounts her family's terrifying dash through war-torn Aden, dodging bullets and shells to reach the port and flee Yemen on a Chinese naval vessel.

The 35-year-old was among around 170 Pakistanis who escaped the country on April 3, along with her accountant husband and two disabled children.

Speaker Nabih Berri voiced optimism that dialogue between the Mustaqbal Movement and Hizbullah will continue despite the tensions between the two sides and their respective allies Saudi Arabia and Iran, reported As Safir newspaper on Wednesday.

His visitors on Tuesday quoted him as expressing his confidence that “both sides of the dialogue are committed to the talks despite some calls to halt it.”

Saudi Ambassador to Lebanon Ali Awadh Asiri emphasized his right to defend his country in the wake of the criticism against it over its military operation against Huthi rebels, especially by Hizbullah, reported As Safir newspaper on Wednesday.

He told the daily: “I have the right to respond to issues that concern my country and leadership, especially when these remarks exceed reason.”

Saudi authorities said on Tuesday they are taking legal action against two police officers accused of sexually assaulting a pair of Iranian male pilgrims, an incident which Tehran protested.

The Saudis began proceedings after allegations of "sexual harassment against two teenage Iranian victims" at Jeddah airport, the interior ministry spokesman said, cited by the official Saudi Press Agency.

Saudi Arabia on Tuesday beheaded an Indonesian domestic worker who knifed to death a Saudi woman described in press reports as her employer.

The interior ministry said Siti Zainab was executed after being convicted of stabbing and beating Saudi woman Noura al-Morobei to death.

The alleged spiritual leader of Shiite Huthi rebels in Yemen has been reportedly buried in Hizbullah's stronghold of Beirut's southern suburbs.

Sheikh Abdul Malek al-Shami was laid to rest on Monday near the grave of Hizbullah's military commander Imad Mughniyeh, who was killed in a 2008 car bomb blast in the Syrian capital Damascus.