As President Barack Obama departed Washington for the G-20 Summit, protestors gathered in the Netherlands to voice some European opposition to his plans for sending more troops to Afghanistan.

The Dutch protestors say Obama is escalating the war there.

"The majority of the Dutch are against the mission in Afghanistan and we want that voice to be heard today," said Maina Van Der Zwan of the Stop NATO Coalition.

Click play for more insight from CBN News International Correspondent Gary Lane.

As U.S. Secretary of State Hillary Clinton arrived at the conference, she suggested creating a stable Afghanistan is not only the responsibility of the United States.

"This time in particular, our commitment going forward in Afghanistan has great consequences for all of our people, all free people, all people who share the values that the Dutch and the Americans share," Clinton said.

Among the summit's participants, the deputy foreign minister of Iran expressed his country's opposition to the expansion of troops. He predicted the troop surge will be ineffective.

The U.S. envoy for Pakistan and Afghanistan, Richard Holbrook, explained why Iran was invited to attend the conference.

"The presence of Iran here is obvious," Holbrook said. "How can you talk about Afghanistan and exclude one of the countries that is bordering a neighboring state? This is absolutely clear."

What was not clear was if the U.S. delegation would use the venue to meet or talk with the Iranians.