In relations with many domestically weak countries, a radio transmitter can be a more effective for form of pressure than a squadron of B-52's.

You could think of the TNF molecule, which sounds the alarm, as a very weak radio transmitter. It moves very slowly as it carries its warning message to neighboring cells, so it is unable to send that message over long distances. However, we discovered that the cellular pathways that pick up this signal act like extremely sensitive radio receivers. They can pick up the alarm message from exposure to even a very small amount of TNF. This turns out to be a very smart strategy on the part of the cells.

A diamond is a chunk of coal that is made good under pressure.

Donald Trump is a phenomenon that foreign countries haven't seen. So it is a shocking experience to them that he came in to office.

Everybody has a hacking capability. And probably every intelligence service is hacking in the territory of other countries. But who exactly does what? That would be a very sensitive piece of information. But it's very difficult to communicate about it. Because nobody wants to admit the scope of what they're doing.

Leadership is absolutely vital if there are comparable countries which can affect the security of the world you live in. Between Lincoln and Roosevelt's time, America was protected by huge oceans and, in practice, by the British navy. Today, it's different, and the obsession of the Obama administration has been for retrenchment.