Fomer Defense Secretary Leon Panetta says America needs to take up a vigorous foreign policy in his book "Worthy Fights." Both Panetta and Hillary Clinton, and Gen. Dempsey of the Joint Chiefs, Gen. Petraeus of the CIA, supported U.S. taking a strong stand in Syria by supporting Syrian opposition forces in the summer of 2011 and were overruled by president Obama and his election advisers because of the approaching 2012 election. Here Mark Landler provides more insights into Hillary Clinton's deeply held belief shared with Panetta that the U.S. had to take strong action where necessary to deter foes, to get into the ring to use Panetta's expression. The U.S. support for action in Libya to support Britain and France comes from the efforts of Clinton, and any lack of followup one of president Obama's errors in foreign policy. In April 2016 president Obama said that he considered his failure to followup in Libya to help the new Libyan government his biggest mistake in his presidency. Here Mark Landler looks at Hillary Clinton's entire career as showing a conviction and belief on the need for action where necessary in the U.S. global engagement. Compared to the bluster of the candidates Trump, Cruz and Sanders, with little experience to back this up in their careers in real estate, law or the Senate , Landler says Clinton is the last remaining hawk. Here he describes Hillary Clinton's contact and empathy for the troops from her trip to the American base in Tuzla, Bosnia, in March 1996. In fact many have forgotten that Yugoslavia is what it is today after the Milosevic years and the ethnic wars with Slovenia, Croatia, Montenegro, members of the EU and Serbia negotiating to enter EU, because of the bombing campaign taken by Bill Clinton through NATO in 1999 to prevent ethnic cleansing in Kosovo, and peacemaking following the Bosnian War using diplomat Holbrooke to negotiate the 1995 Dayton Accords. Here Landler describes the meetings with Gen. Keane who pushed for the troop surge that worked in Iraq under president George W. Bush. Clinton supported Keane's proposal made in April 2015, for a no-fly-zone in Syria that would help opposition forces till a settlement could be negotiated. Keane pointed out to Clinton that there was a flaw in Obama's policies- that negotiation would work only if the no-fly-zone was used to support opposition forces. By the end of 2015 Hillary Clinton publicly adopted this position. During a period when Americans are weary of foreign entanglements but understand the need to provide leadership where needed, Hillary Clinton, provides a balance between the pendulum swinging too sharply in one direction in the Bush years and in another direction in the Obama years, says Landler. A view also articulated by Leon Panetta, who was chief of staff for President Clinton during the Bosnian conflict and the Dayton Accords, where the U.S. showed strength of purpose in war and also in negotiating the peace without major entanglements....