Why UN Chief Says Yemen 'Is Collapsing Before Our Eyes'

Analyst: "Things were already bad ... [and] each day gets exponentially worse."

— -- For the first time since Farea al-Muslimi can remember, there was absolutely no traffic today on the road to Sanaa, Yemen’s capital.

“No one wants to go into the capital,” he told ABC News.

The 24-year-old said he’s seen 10 wars in his lifetime, and this is the first time he thinks his life is in danger.

"It’s not as if Yemen was not in bad shape before,” said Adam Baron, a visiting fellow at the European Council on Foreign Relations and former Sanaa-based journalist. “Before the current political crisis started, things were already bad ... and now, each day gets exponentially worse.”

For the Middle East’s poorest country, the problems will only worsen as big powers close their doors in Sanaa.

"On one level, the U.S. is citing ’security risks’ -- but leaving is a politically charged statement to put pressure on the Houthis,” Baron said.

The other consequence, he added, is the real risk that international aid may dwindle as international presence shrinks.

Once generous supporters of Yemen’s previous U.S.-backed government, Saudi Arabia yanked its $4 billion in aid late last year when the Houthis began to consolidate power, and the United States has averaged some $200 million annually in recent years.

“We cannot reach 16 million people on our own,” said Kate Wiggans, campaigns and policy head for the Middle East for Oxfam. “And if the international community starts pulling funding, that can only make things so much worse for those 16 million people.”

“The light at the end of the tunnel" that the international community once promised, Muslimi said, "is actually the light of the train coming straight for us. And it’s a dangerously, armed train.”