But Saudi Arabia, which hosted the meeting, has gone a step further by criticising Iran's role in both conflicts.
As expected, an official statement from the six-nation Gulf Cooperation Council has condemned terrorism, and called on Yemen's warring sides to reach a political solution.
The conflict has killed more than 6,000 people and caused widespread damage to the country's economy and infrastructure.
So the GCC's Secretary General, Abdul Latif bin Rashid Al Zayani, is now calling for an international reconstruction conference.
"The GCC has asked for the preparations of an international conference to rebuild Yemen, once the Yemeni parties have reached the desired political solution, set a practical program to rehabilitate the Yemeni economy and make it easy to enter the Gulf economic market again."
The conflict points to a struggle for regional supremacy as Saudi Arabia leads an Arab military intervention against Shiite rebels backed by Iran.
In his comments after the meeting, Saudi Arabia's foreign minister Adel al-Jubeir said he wanted better relations with Iran but it continues to play what he's called "a negative role" in most of the region's issues.
He pointed to last month's meeting in Vienna about the Syrian conflict where he only met his Iranian counterpart for a few minutes.
The Saudis and Iranians are backing opposing sides in Syria as well.
Mr Juneir remains adamant Syria's President Bashar al-Assad is facing limited options when it comes to his political future.
"Our support to Syria continues. As I said before, Bashar al- Assad has two solutions: leave through negotiations, which is easier and better for everyone. Or he will have to leave through fighting, because the Syrian people refuse to let this regime stay in power. The Syrian people insist on a new civil government that respects the rights of all no matter what their religion or ethnicity."
The Saudi capital has also hosted a separate summit of more than 100 representatives from various Syrian opposition groups in an effort to unite their ranks.
But a powerful insurgent group, Ahrar al-Sham, decided to pull out of the talks, protesting at the involvement of another group, the National Coordination Body for Democratic Change.
Ahrar al-Sham considers it a pro-Assad organisation.
Nevertheless, the group has reportedly agreed to the final terms of the meeting which call for President Assad to leave power at the start of a transitional period, and for an all-inclusive, democratic civic state.
The summit also committed to preserving Syria's state institutions.
The GCC has announced that the opposition conference will set up a joint body to meet with a delegation from Bashar al- Assad's government in the first ten days of January.
Meanwhile the Gulf leaders have announced additional measures to combat intolerance of Muslims, following recent comments by US Republican presidential candidate Donald Trump.
He's called for a ban Muslims entering the United States after an allegedly radicalised couple carried out a mass shooting in California, killing 14 people.
The GCC's Secretary General says it's the Council's duty to ensure Islam's image isn't tarnished.
"In terms of resistance against the media campaigns aimed at distorting Islam's image, and the growth of extremist speeches of hatred and intolerance against Arabs and Muslims, as well as attacks on Arab and Islamic countries, the highest council will redouble efforts to bring out the true image of Islam and its values as a preacher of moderation, tolerance, and peace."
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