The United States and Britain may offer Syrian President Bashar Al-Assad a clemency deal if he will relinquish power.
They would also offer Assad safe passage to peace talks in Geneva later this month.
British Prime Minister David Cameron and President Barack Obama each held bi-lateral talks with Russian leader Vladimir Putin during the G-20 talks in Mexico.
The leaders discussed ways to remove Assad from office and pave the way for elections in Syria within 18 months. Putin was reportedly open to the plan.
The international community has been at a stalemate over Syria, where more than 15,000 civilians have been killed since the revolt against the Assad regime began 14 months ago.
The move to remove Assad peacefully is seen as a way to stop the bloodshed before Syria devolves into an all-out civil war.