Malaysia and Indonesia are outraged at the persecution of the Muslim Rohingya in Burma and are threatening to send in military help – whether officially or not is unclear at this point.
They cannot go overland via Thailand, because there is no way that the Thai’s will allow it; they have their own Muslim problems. They cannot fly in without a gunfight. The only realistic path is via the Bay of Bengal. India (hardly a Muslim ally) will have a say in that.
Just what the world needs – another potential major flashpoint. All it needs to really go off the rails is Turkey’s Erdogan to become involved.