Reuters reports: The Red Cross now views fighting in Syria as an internal armed conflict – a civil war in layman’s terms – crossing a threshold experts say can help lay the ground for future prosecutions for war crimes.

The International Committee of the Red Cross (ICRC) is the guardian of the Geneva Conventions setting down the rules of war, and as such is considered a reference in qualifying when violence has evolved into an armed conflict.

The independent humanitarian agency had previously classed the violence in Syria as localized civil wars between government forces and armed opposition groups in three flashpoints – Homs, Hama and Idlib.

But hostilities have spread to other areas, leading the Swiss-based agency to conclude the fighting meets its threshold for an internal armed conflict and to inform the warring parties of its analysis and their obligations under law.

“There is a non-international armed conflict in Syria. Not every place is affected, but it is not only limited to those three areas, it has spread to several other areas,” ICRC spokesman Hicham Hassan told Reuters in response to a query.

“That does not mean that all areas throughout the country are affected by hostilities,” he said.

The qualification means that people who order or commit attacks on civilians including murder, torture and rape, or use disproportionate force against civilian areas, can be charged with war crimes in violation of international humanitarian law.

For most of the 17-month-old conflict, the ICRC has been the only international agency to deploy aid workers in Syria who deliver food, medical and other assistance across frontlines.

All fighters caught up in an internal armed conflict are obliged to respect international humanitarian law, also known as the law of armed conflict, according to the ICRC. This includes specific sections of the 1949 Geneva Conventions.

“What matters is that international humanitarian law applies wherever hostilities between government forces and opposition groups are taking place across the country (Syria),” Hassan said. “This includes, but is not necessarily limited to Homs, Idlib and Hama.”

Andrew Clapham, director of the Geneva Academy of International Humanitarian Law and Human Rights, said the ICRC assessment of the conflict, which he shared, was important.

“It means it is more likely that indiscriminate attacks causing excessive civilian loss, injury or damage would be a war crime and could be prosecuted as such,” Clapham told Reuters.