All the states in the region should be involved in the Syrian crisis settlement, along with Russia, Turkey and Iran, French President Francois Hollande said on Tuesday.

STRASBOURG (Sputnik) — Syria is a "monumental challenge" to the international community and, first and foremost, the sides need to ensure a truce and unhindered humanitarian aid delivery.

"Of course, we have to include all the parties involved in the conflict, the counties in the region and also Russia and Turkey, and I would add Iran, we need all countries around at the negotiating table," Hollande said at the Parliamentary Assembly of the Council of Europe (PACE) meeting.

On Monday, the autumn PACE plenary session kicked off in the French city of Strasbourg. It will last through Friday. Late last week, Russia as permanent UNSC representative blocked the French draft resolution on Syrian crisis settlement, however, it was unable to secure support for its own draft in the UN Security Council.

Russia's new draft resolution provided, in particular, for the ceasefire in the hotspot Aleppo province, near which an UN-Syrian Arab Red Crescent humanitarian convoy was hit by a strike last month.

As a result, 18 of 31 trucks were destroyed and at least 21 individuals were killed. The attack marked the collapse of a Russia-US bilateral ceasefire agreement negotiated at the time. Syria has been mired in civil war since 2011, with opposition factions and Islamist terrorist groups such as Daesh and al-Nusra Front, now known as Jabhat Fatah al-Sham, both outlawed in Russia, fighting the Syrian Army.

By Sputnik