I think they are all being dealt already, there have been lots of deals in the news where US make deal with Russia about Ukraine. They also deal with Iran and China these days. Well not all could be true but maybe they are. Its better that they talk though than sending nukes to each other.
Having a ceasefire would be nice. But it would have been better if they could just make a peace deal between them and not wait for US and China to take sides. Both these super power will tend to protect their investment in these two.
Actually, in terms of war, any war can spread like a cancer in the whole world. Although I said in my previous post that these two countries do not have much impact on the world economy economically because both these countries are third world countries.
But, the President of the United States of America, Donald Trump, has taken the initiative to mediate in this war and I think the main reason behind this is that both Pakistan and India are nuclear powers and if a nuclear war breaks out in this world, it will not take long for it to become a third world war.