BAGHDAD, Iraq – The tribunal that will put Saddam Hussein on trial released a video yesterday showing the 68-year-old former dictator – looking drawn and tired but dressed in a pinstriped suit – being questioned about the killings of at least 50 Iraqis in a Shiite town.

Unlike Saddam’s combative appearance at his arraignment on July 1, 2004 – the last time he was seen on video – the new tape reveals a man who appears a shadow of his former self.

There are heavy bags under his eyes. He often clasps his hands and squeezes his fingers – often clutching them together when trying to make a point. His hair appears unkempt and he constantly runs his hand down his face and through his beard, which has more gray flecks in it than it did a year ago.

At least two legal officials close to the case said the video – which was not accompanied by any audio – was apparently made Sunday. They did not want to be identified for security reasons.

The video was released as insurgents, many of whom are believed to be Saddam loyalists, launched four suicide car bombings and other attacks around Iraq that killed at least 14 people. Twenty-two more Iraqis were wounded after militants opened fire on authorities trying to evacuate the injured from one of the suicide blasts in the northern city of Samara.

A car bomb exploded several hundred yards from an armed convoy carrying an American diplomat in Baghdad yesterday, but the official was unhurt, the embassy said. A State Department spokesman, Sean McCormack, said there had been an explosion but the convoy was not the target.

Already tense relations soured further yesterday between the majority Shiites, who dominate the government and parliament, and the Sunni Arabs, whom many hold responsible for the insurgency.

Strong disagreements broke out over the number of representatives the once powerful Sunni minority will have on a committee drafting the country’s constitution. Shiite lawmakers rejected calls for increasing Sunni representatives to 25 from 15 on the 55-member drafting committee. Sunnis renewed threats to boycott and sink the charter.

Limited or no Sunni participation on the committee would rob the charter of its legitimacy. When the draft is put to a nationwide referendum, it is likely that at least three of the four predominantly Sunni Arab provinces in Iraq would vote against it, causing the measure to fail and parliament to dissolve.

President Bush spoke yesterday with Iraq’s president, Jalal Talabani, and stressed the importance that a draft of the constitution be completed. The leaders also discussed the importance of having all groups in Iraqi society represented in the constitutional process, the White House press secretary, Scott McClellan, said.

The Iraqi Special Tribunal trying Saddam likely issued the new video to show that it is in control of the proceedings and to counter widespread beliefs that it was being directed by Shiites and Kurds who dominate the government and the 275-member National Assembly.

Iraq’s Kurdish president and the Shiite-led government said last week that the ousted leader could appear before the tribunal within two months. They later backtracked after complaints from Saddam’s legal team and the tribunal, which said no trial date has been set.

The video showed Saddam wearing a dark gray suit and white open-collared shirt being questioned by chief trial Judge Raid Juhi. Saddam’s chief Iraqi lawyer, Khalil al-Duleimi, can be seen sitting to his right. Four other defendants, all members of Saddam’s administration, were also shown.

The former dictator faces charges that include killing rival politicians over 30 years, gassing Kurds in the northern town of Halabja in 1988, invading Kuwait in 1990,and suppressing Kurdish and Shiite uprisings.

In Amman, Saddam’s lawyer said his Jordan-based legal team was not aware that the fallen dictator was questioned.

But Ziad al-Khasawneh said the fact it was videotaped and released “shows the kind of justice which the president is expected to endure during the upcoming trial.”

An announcement that accompanied the tape said Saddam was being questioned about crimes related to the killings of at least 50 Iraqis in 1982 in the Shiite town of Dujail, 50 miles north of Baghdad, in retaliation for a failed assassination attempt against him.

Also yesterday, radical anti-American Shiite cleric Muqtada al-Sadr met with the Russian ambassador and tribal chiefs from the insurgent hotbeds of Fallujah and Ramadi.

The meeting between Mr. al-Sadr and Russian Ambassador Vladimir Chamov in the Shiite holy city of Najaf seemed to be a sign of the cleric’s desire to return to active politics after going into isolation last fall, following clashes between his militia and American troops.