Bloomberg says in this poll, leaders from across the political spectrum have condemned this policy, saying banning members of an entire religion from entering the country goes against everything we believe in as Americans, and it will make our country less safe by alienated the allies we need to fight ISIS.

In this country tonight, PBS shows one of the most talked about tributes of the year.

Karachi captures all of those rifts between ancient and modern, communal and individual. You see them playing out in people's lives.

We've learned something about President-elect [Donald] Trump's choice for secretary of defense. Lawmakers in Congress intend to proper debate over whether retired General James Mattis meets a requirement for civilian control of the military.

President-elect Trump has said he would like to improve relations with Russia. His choice for defense secretary views Russia as America's number one threat.

I would say that the one incredible thing that Karachi has going for it is the unabated supply of new migrants that pour into it day after day. It could be a poor factory worker who simply wants a job, it could be an ambitious guy coming for an education - they all add hope and vibrancy to the city. Now, this is not something that is generally taken as positive in Karachi. But the hope is that the migration that comes into the city replenishes its stores of resilience and energy.

We need to be stronger. We need to deter the Russians. We need to show resolve, which is why cooperating with them on the other hand can be more difficult.