At the heart of the effort is an Iraqi-American unit called the Major Crimes Task Force, meant as the nucleus of a professional investigative agency.
The program has been most successful in the Helmand River valley, and the Musa Qala district is far from the heart of the effort.
The heart of the effort, which had been requested by Congress, was a series of modeling studies that had to be run on computers in Britain, Canada and Japan because American climate centers lacked the capacity to perform the calculations.
But Mr. Lear is working to produce what he hopes will be a different kind of cultural phenomenon in the coming months, and that teenage soap opera is at the heart of the effort.
But at the heart of the effort is fire prevention, through what the government calls hazardous fuels reduction, to be carried out primarily in the areas where residential communities abut public land.
Despite an internationally supported campaign to halt polio in Pakistan, infection rates have soared across the country in the past year, coinciding with a wave of militant attacks against the poorly protected workers at the heart of the effort.
Bannon and the war room are the heart of the effort to turn Trump's populist campaign into a policy agenda that can pass Congress or be implemented through executive actions.
The heart of the effort, these officials said, was a covert plan to construct a mobile germ plant, real in all its parts but never actually "plugged in" to make weapons.
At the heart of the effort, introduced Friday morning, are two groups: Priorities USA Action, which will engage directly in electioneering backed by donors who will have to be identified but can give unlimited amounts, and Priorities USA, which will advertise about related campaign issues using money from undisclosed sources.
The question goes to the heart of the effort to boost the world's tiger population.
