Defence must be more adaptable, able to respond quickly to the changes in the security environment and the character of conflict.

I am extremely honoured to be the Defence Secretary, and I would not do the job if I did not think that I could make a useful contribution in the role.

Our aim is always to minimise casualties and to separate a hardline Taliban from those who have been caught up in the insurgency.

As the Chief of the Defence Staff says, you don't defend on the goal line. Defending the interests of the U.K. means tackling threats early and at source, and that means intervening overseas.

A person always doing his or her best becomes a natural leader, just by example.

The overwhelming majority of Americans want decent and civil political dialogue, and candidates for office and elected leaders must continue to call for calm and unity, even when there are intense differences of opinion.

Fortunately, good policy, true principles, and effective leadership work whenever they are tried. When we reduce government, balance budgets, and keep taxes as low as possible, states respond in a positive way.

I urge President Trump to maintain American participation in the Paris Agreement - for the sake of our international leadership, economic competitiveness, and children's environmental future.