UPDATE 4-UN nations condemn Syria; Russia, China seen isolated

* 133 votes in favor of Saudi resolution, only 12 against

* Syria, Russia condemn the General Assembly resolution

* Western envoys: Vote shows Russia, China isolated

UNITED NATIONS, Aug 3 (Reuters) - U.N. member states on

Friday overwhelmingly voted to condemn the Syrian government at

a special session of the General Assembly that Western diplomats

said highlighted the isolation of Syrian President Bashar

al-Assad's supporters Russia and China.

The 193-nation assembly approved the Saudi-drafted

resolution, which expressed "grave concern" at the escalation of

violence in Syria and condemned the Security Council for its

action, with 133 votes in favor, 12 against and 31 abstentions.

Dozens of other countries, including many Western states,

co-sponsored the resolution.

As expected, Assad's staunch ally Russia was among the 12

countries that opposed the resolution in the assembly, where no

country has a veto but all decisions are non-binding. Others

that voted against it included China, Iran, North Korea,

Belarus, Cuba and others nations that often criticize the West.

Some countries did not participate in the vote.

The resolution has the assembly "deploring the failure of

the Security Council to agree on measures to ensure the

compliance of Syrian authorities with its decisions."

It also calls for "an inclusive Syrian-led political

transition to a democratic, pluralistic political system" a nd

expressed "concern at the threat by the Syrian authorities to

use chemical or biological weapons."

The United States and European powers blame Russia for the

deadlock on the 15-nation council. Last month Russia and China

joined forces in their third double veto on the Syrian crisis to

strike down a resolution that would have called for an end to

the violence and threatened Damascus with sanctions.

Many of the elements from the latest vetoed resolution were

included in the text the assembly approved on Friday.

Russia blames the West for the Security Council deadlock,

accusing it of encouraging and supporting Syrian rebels. Russian

U.N. envoy Vitaly Churkin blasted the resolution as "harmful."

"Behind the facade of humanitarian rhetoric, the resolution

hides blatant support to the armed opposition, which they're

actively supporting, financing ... and they're arming," he said.

U.S. Ambassador to the United Nations Susan Rice welcomed

the resolution's adoption.

"Despite the continued opposition of an increasingly

isolated minority, the overwhelming majority of U.N. members

clearly stands resolutely with the Syrian people as they seek to

fulfill their legitimate aspirations," Rice said.

SPOTLIGHT ON RUSSIA AND CHINA

Syrian Ambassador Bashar Ja'afari, after the vote,

complained that the meeting was "another piece of theater"

organized by the Qatari president of the General Assembly,

Nassir Abdulaziz al-Nasser, to pursue his country's agenda.

Saudi Arabia and Qatar support the rebels determined to oust

Assad. Ja'fari repeated his country's accusations that both are

supplying weapons to the opposition, adding that Friday's

"resolution will have no impact whatsoever."

Several Western diplomats said an important reason for

adopting a non-binding resolution at the General Assembly was to

send a political message and shame Russia and China for opposing

tough action against Assad's government in the Security Council.

"This vote shines the spotlight on Russia and China and

humiliates them in a way that they don't like," a U.N. diplomat

said on condition of anonymity.

Russia, which has its only warm water naval base outside the

former Soviet Union in Syria, is Assad's key supporter and

principal arms supplier.

China, diplomats say, has been supporting Moscow in exchange

for Russian pledges to back Beijing on issues like North Korea

and Taiwan at the United Nations.

Britain's U.N. Ambassador Mark Lyall Grant told reporters

after the vote that a "colossal majority" supported the

resolution, which had been revised to remove language explicitly

backing Arab League calls for Assad to step down and urging

states to implement sanctions against Damascus.

But the resolution still welcomes an Arab League decision

calling for Assad to step aside, without giving details of that

decision.

Those revisions secured the support of dozens of countries

that might have opposed it otherwise, U.N. diplomats said.

Saudi Arabia's Ambassador Abdallah al-Mouallimi said "the

number of votes in favor has exceeded all of our expectations."

French Ambassador Gerard Araud, president of the Security

Council this month, also welcomed the adoption of the

resolution, but said it was unfortunate the council has been

unable to act the way that the assembly did.

"The Security Council is blocked," he said. "I don't see how

we could move forward on this issue."

Earlier U.N. Secretary-General Ban Ki-moon told the assembly

that the brutality in Syria's biggest city, Aleppo, where forces

loyal to Syrian President Bashar al-Assad and rebels continue to

face off in bloody clashes, may be crimes against humanity.

"As we meet here, Aleppo ... is the epicenter of a vicious

battle between the Syrian government and those who wish to

replace it," Ban said.

"The acts of brutality that are being reported may

constitute crimes against humanity or war crimes," Ban said.

"Such acts must be investigated and the perpetrators held to

account."

Both sides accuse the other of summary executions and mass

killings in Aleppo.

Ban repeated that he intended to replace U.N.-Arab League

mediator Kofi Annan, who announced on Thursday his intention to

step down at the end of August. Annan said the Security Council

deadlock was among the factors undermining his peace efforts.