william brangham has our report: >> the prime minister of the republic of india. >> brangham: it wasousing welcome today for prime minister narendra modi, and another sign >> brangham: of course, things were not always so friendly: for decades, the u.s. and india were divided by mistrust and cold war politics. and modi himself was refused entry to the u.s. in 2005, after religious riots killed more than 1,000 muslims in the state he governed. but since becoming prime minister, in 2014, he's worked to foster new cooperation with washington. sumit ganguly is a professor of political science at indiana university in bloomington. >> unlike a host of other indian prime ministers who had cut their political teeth during the cold war, and thereby harbored all manner of misgivings about the united states, modi does not carry the same sort of political baggage. >> brangham: the two countries share growing concerns about china's assertiveness in the asia-pacific. climate change could be another area of agreement. modi suggested yesterday that india-- the world's third largest emitter of carbon

william brangham reports from orlando. >> when you saw his picture, what went through your mind when you saw his picture? >> we just went, "oh, yeah, that makes sense. there, that's omar." >> reporter: it's a new wrinkle into the investigation of omar mateen. some of the patrons are now saying mateen was a frequent >> he used to come in the bar about, on the weekends. sometimes he would be there. sometimes he would miss a couple of weeks and then be in again. he was a regular. >> brangham: this afternoon, the nightclub's owner said through a spokeswoman that the reports are "untrue and totally ridiculous." but the associated press reported the f.b.i. is investigating those claims, as well as whether mateen may have used a dating app for gay men, >> the last contact was about three months ago and as soon as i saw the picture on the news i quickly noticed the person's face. >> brangham: these allegations come as something of a departure from what was previously said about the attacker. mateen's father has said he became upset months ago after seeing two men kissing, but otherwise, neve

we can't let them win. >> brangham: for the pbs "newshour," i'm william brangham. >> woodruff: people seeking safety in europe are now sailing the western mediterranean, after turkey and the european union struck a deal to stem the refugee flow. the results have been deadly: more than 1,000 people have drowned just in the past several weeks. and both here and abroad, the debate about their fate rages on. for an update, gwen ifill spoke this week with amin awad, the director middle east and north africa for the u.n. refugee agency, u.n.h.c.r. mr. awad, welcome. on this program we have seen the terrible stories of the hundreds of thousands of refugees coming, especially from the middle east and africa, trying to get to greece, trying to get to turkey, trying to get into europe. has that problem, has it gotten worse or gotten better since this whole crisis began? >> i think this problem of migrants and refugees is persisting. i wouldn't say it's getting better or getting worse simply because of conditions that people are fleeing are getting worse. the serious situation is not better than

william brangham has our encore look at how one local community is trying to prepare. >> brangham: i'm of washington. this is the very edge of the continental united states. and just a few miles out in the pacific ocean is considered one of the most dangerous seismic faults in all of north america. scientists believe if that fault were to rupture, it could devastate much of the pacific northwest. the fault is known as the cascadia subduction zone, where two tectonic plates meet under the pacific ocean. this faultline stretches 700 miles along the coast. >> earthquakes have no season, it's earthquake season every day. >> brangham: ken murphy is fema's regional administrator. he oversees emergency operations for the northwest region. he says if this whole fault were to rupture, not only would there be a catastrophic earthquake, but that quake would then trigger an enormous tsunami, which would crash into the pacific northwest minutes later. >> you roughly have about 140,000 square miles of communities and land and people up and down washington, oregon, and northern california. >> brangha

for the pbs newshour, i'm william brangham in moose lake, minnesota. >> ifill: we continue our brokenustice series tomorrow, with a report on educational options for young people inside the juvenile justice system. stay with us. coming up on the newshour: how one college is closing the graduation gap between first generation students and their peers, celebrated author sherman alexie writes his first children's book using native american themes, and remembering legendary basketball coach, pat summitt. but first, as the supreme court wraps up an eventful term, a look back with a lawyer who has argued his share of cases in those chambers-- retiring solicitor general donald verrilli. judy sat down with him recently on his final day on the job, after the court's ruling on immigration and affirmative action, but before yesterday's landmark decision on abortion rights. here is that exit interview. >> woodruff: donald verrilli, thank you very much for talking with us. >> thank you, judy. it's great to be here. >> woodruff: so you have been the solicitor general for the past five years for a d

william brangham has the story. >> brangham: as news broke early sunday about the killings in orlandoshua weil thought what many muslims thought about the attacker. >> my first thought is always, and sadly, "please don't let them be muslim." >> brangham: weil is a member of the islamic center of orlando, one of the largest muslim mosques in this area. of course, news quickly broke that the killer, omar mateen, was, in fact, a muslim. the attacks occurred right after saturday night's ramadan prayers. >> the thought occurred to me that because that night i got this guy was muslim, he probably just left one of these mosques. he might even have left this mosque! he might've been standing and praying taraweeh with us, standing side-by-side with his brothers and listening to the koran, and then he left that to go murder all these people. >> brangham: tariq rasheed is the imam of this mosque. >> every muslim in this country and in orlando is grieved. and they are in shock. they are asking questions-- how come this happened in orlando? how can a person with muslim faith do this? so, you know,

brangham: okay, that got my attention. our science correspondent, miles o'brien, is here to spell out more. >> william, i should have brought popcorn. >> brangham: exactly. we have been to jupiter before. n.a.s.a.'s been there a couple of times, what's different this time? >> depending on how you count, we've had about ten missions to jupiter, most fly-bys, voyager, pioneer, newo horizons as well. the orbiting mission of galileo which began in the early '90s to 2000s, began the search of jupiter around its moons. the hubble telescope captured a lot of interesting data from jupiter. in particular, in 19934, you may recall when the shoemaker comet struck jupiter, hubble got amazing images of the impacts, but all offthis is skin deep. >> brangham: so what are we trying to learn this time? >> well, there is a lot of things we can learn from jupiter. jupiter, of course, is the biggest plant in our solar system of eight planets, about two and a half times of all the rest of the solar system combined, of the planets, that is. it's really like a big deep freeze for how our solar system began 4 billion years ago. it really hasn't ch

william brangham has our conversation. >> reporter: that moment was the pivotal time in the late 1960sn ali was still the heavyweight champion of the world. he resisted the draft to vietnam-- a court fight he ultimately won after more than three years-- but he was stripped of his heavyweight title. here's ali in 1968, talking about his muslim faith, and the loss of his boxing title. >> boxing was only for self gain, just beating up one of my brothers or somebody else's brother for money. if i would only deny my faith, if i would only join up against my religion, i could easily go back to making millions. so i could always say i turned this down. i didn't lose it. i turned it down. i go out with my head high. >> reporter: for some perspective on that time in ali's life, and our evolving perceptions of the man, we're joined by gerald early, who edited "the muhammad ali reader." he's a professor of english and african-american studies at washington university. so, gerald early, i wonder if you could remind our viewers, ali was at the peak of his powers, the heavyweight champion when he to

william brangham begins our coverage in orlando. >> brangham: there was relative calm outside the "pulseghtclub this morning, a far remove from the chaos of 24 hours earlier. amateur video captured the terror: gun shots shattering the party atmosphere inside the club. the man firing the shots: 29- year-old omar mateen, ultimately killed by a swat team. police said today they have no regrets about storming the club: >> based on information we received from the suspect, and from the hostages, and people inside, we believed further loss of life was imminent. i made the decision to commence the rescue operation and do the explosive breach. >> brangham: during the attack mateen called 9-1-1 dispatchers and pledged loyalty to the islamic state. today, isis radio released an audio statement, calling him a soldier of the caliphate. and, officials in saudi arabia confirmed he'd visited their country twice for pilgrimages. but in washington, f.b.i. director james comey said there's every reason to think mateen acted on his own. >> there are strong indications of radicalization by this killer and o