On February 22, the US and Russia released a joint statement
on the Terms for a Cessation of Hostilities in Syria and proposed the
ceasefire commence at 00:00 (Damascus time) on Feb.27, 2016.

South Front 
The ceasefire is to be applied to those parties that have indicated
their commitment to and acceptance of its terms and does not apply to
ISIS Jabhat al-Nusra, Ahrar ash-Sham and other terrorist organizations
designated by the UN Security Council.
The sides involved in the conflict should indicate their commitment
to the ceasefire by no later than 12:00 (Damascus time) on Feb. 26,
2016. In turn, Russia and the US will exchange pertinent information and
develop procedures necessary for preventing clashes between the sides
committed to the ceasefire.

The International Syria Support Group (ISSG) Ceasefire Task Force,
co-chaired by the US and Russia, has been also established under UN
auspices. The Ceasefire Task Force includes Russian and US political and
military officials and the UN Office of the Special Envoy for Syria
(OSE) as secretariat.

The primary functions of the Task Force are:

• delineate the territory held by “ISIS”, “Jabhat-al-Nusra” and other terrorist groups
• ensure communications among all parties to promote compliance and rapidly de-escalate tensions;
• resolve allegations of non-compliance;
• refer persistent non-compliant behavior by any of the parties and to determine appropriate retaliatory actions.

The formal side of the statement brings up an issue hidden by the
main stream media. If the main task force and the ceasefire agreement is
set up between the US and Russia, who with whom is in war in Syria? The
Russian military grouping is the only force arrived Syria upon the
official request of the Syrian government. Thus, according to the
international law, the US is an aggressor seeking to seize the Syrian
land with hands of its regional partners and proxy forces. It should be
noted that Turkey doesn’t play any significant role in the settlement of
the conflict because the Erdogan regime isn’t an independent
international actor.

The US’s decision speed to agree with the ceasefire shows
that the US-led block has really faced a threat of military defeat in
Syria. The US-led block can’t dictate terms to Syria and Russia. On the
other hand, the Syrian Arab Army and its allies need time to regroup
forces and facilities to continue the fight against terrorists.

 http://www.veteranstoday.com/2016/02/23/southfront-syria-ceasefire-strategic-implications/