We're all interconnected. For example, a simple lack of fresh water can lead to population dislocation, which can lead to political radicalization, which can lead to great pressure on the states that receive refugees because of a migrating population.

I try to lead by example.

She's always been more of a do-it kind of player. She's been a leader through her example more than her talking.

Rohan said there have been dramatic improvements. Most of the infrastructure - the roads and water lines, for example - are back in order. They're working hard on reconstructing schools. The country has socialized medicine, and the government clinics are being rebuilt, too.

For example, population growth varies from state to state, with states in the Sunbelt attracting new residents from other states. It is reasonable to expect faster-growing states such as Arizona and Nevada to continue to see stronger housing markets.

I'm very much a lead by example person.