Starting right now on ABC's "This week" -- desperate search. The clock is ticking in the frantic hunt for hundreds of kidnap did the Nigerian government ignore the warnings? This morning, brand-new... See More
Starting right now on ABC's "This week" -- desperate search. The clock is ticking in the frantic hunt for hundreds of kidnap did the Nigerian government ignore the warnings? This morning, brand-new details. Including the latest from the secretary of defense. Rocky week. The benghazi fire storm reignites. And Monica lewinsky reappears. Will it take a toll on Hillary's plans for 2016? Plus, senator Marco Rubio. Can the one-time tea party star still win over the gop? We're on the trail in new Hampshire. Do you think you're ready to be president? I do. From ABC news, "This week" with George stephanopoulos begins now. Good morning. I'm Martha Raddatz. Happy mother's day. So much to cover including Michael Sam's emotional and historymaking moment at the NFL draft. But first, dramatic developments in Nigeria, where we have learned U.S. Surveillance aircraft are on the way to held inspect the urgent search for hundreds of kidnapped schoolgirls. And there are new questions about whether warnings before the kidnapping were ignored. ABC's hamish Macdonald has the very latest. Reporter: This morning, the fwochlt is facing damning allegations that boko harm was coming four hours in advance. This is shocking. Embarrassing. A lack of political will. Reporter: The claims are made in an amnesty international investigation. The defense ministry says the report is unfortunate and untrue. We do know Nigeria's government took time before accepting international help. There are now two dozen U.S. Personnel on the ground, including the military in a support role only. The surveillance and reconnaissance assets heading to Nigeria could help immensely. In the search. It may include aircraft, capable not only of visual surveillance but those that could pick up cell phone conversations in real time. The cia director indicated on our sister network, fusion, there is scope to do more. We have officers on the ground in many parts of the world. We're able to bring to bear the capabilities that we need. The people that we need. Reporter: Support is spreading globally. From the pope on Twitter to the first lady. In these girls, Barack and I see our own daughters. Reporter: The question is whether all this support will make it easier or harder for the families to get their girls back safely. There is a perceived risk here that pressure from outside could force Nigeria's president to take a more hard-line approach. That could endanger the girls. For "This week," hamish Macdonald. Our thanks to hamish.
This transcript has been automatically generated and may not be 100% accurate.