The U.N.-brokered cease-fire in Syria keeps unraveling. Syrian government troops were supposed to pull their tanks and soldiers out of cities and towns, while rebels were supposed to lay down their arms.
Yet hundreds of people have died in recent days, according to activists. And in some areas, visits by U.N. observers have been followed by intense violence.
Only about a dozen U.N. observers have reached Syria. Wearing their signature U.N.-blue berets or helmets, their goal is to see whether government troops and rebels are sticking to the cease-fire, which went into effect April 12.
In some places, like the flashpoint city of Homs, the mere presence of monitors does seem to be stemming the violence.
Fighting In Hama
But in other locations, like the central city of Hama, it's not so simple.
Videos taken by Hama residents and posted on the Internet show people holding olive branches, crowding around the U.N. monitors' vans, begging for help with detained relatives or destroyed homes.
"Bashar al-Assad kills us," one man says, referring to the Syrian president. "We want freedom."
In another video, you see a soldier standing on a roof in Hama, swiping his hand across his chin in a common Syrian gesture. "Just wait till later," he is saying with his hands. "You'll see."
After the monitors left, people began protesting against the Syrian regime. Activists say snipers posted on rooftops — like the one in the video — opened fire — a fairly common occurrence these days in Syria. To go out and protest is to risk being injured or killed.
The next morning, conditions grew worse. Another video shows tank shells reducing parts of houses to rubble. While Hama has been shelled intermittently during the past year, residents say it has never been this bad. Houses started crumbling and people were killed, according to residents.
The Rebels Strike Back
And then the situation grew more complicated.
Rebels known as the Free Syrian Army began fighting back. If the government won't keep up its end of the cease-fire, says a rebel fighter from Hama who goes by the name Abu Mazen, then they won't either.
"The cease-fire has never been respected by the government. They are shelling Homs, they are shelling Hama, they are shelling everywhere," he says through an interpreter. He estimated that about 50 people a day were dying since the U.N. observers reached Syria.
Abu Mazen says the rebels in Hama decided to fight back by shooting and killing a colonel who was leading the offensive. Other reports say his driver was also killed.
After that, the army assault intensified. The shelling increased and snipers reportedly shot anyone who tried to leave the area.
Activists say bodies had to be buried in a garden because no one could leave the area. In all, at least 30 people were killed in the city, they say.
One activist, who goes by the name Manhal, says while civilians were targeted in retaliation for the killing of the colonel, they were targeted before that for speaking to U.N. observers. He says he has the names of at least six people who spoke to observers and were later killed by Syrian troops.
"They came to kill. They came to shell," Manhal says.
U.N. and U.S. officials say they are disturbed by the news of what happened in Hama.
"It is absolutely deplorable, if there is this kind of intimidation, harassment and possible violence against those Syrians who have every right to meet with and discuss the monitors," said U.S. Secretary of State Hillary Clinton.
"That's what the monitors are there for."
Later, the U.N. observers returned to Hama. Many people were afraid to talk to them. Others covered their faces. They showed the monitors destroyed homes and a makeshift graveyard where the dead had to be buried.
Now the U.N. plans to keep two observers in Hama indefinitely.
Sean Carberry contributed to this report.