here's margaret brennan. >> we have now cut off every single path that iran could have used to build a bomb. >> reporter: president obama yesterday hailed the administration's nuclear deal with iran. it went into effect over the weekend after iran made good ahead of schedule on its promise to disable key nuclear facilities. it transferred 25,000 pounds of atomic fuel to russia, 12,000 centrifuged and poured concrete enter a plutonium reactor, u.n. weapons inspectors will now be on the ground watching whether iran cheats. in exchange, the white house lifted sanction, allowing iran access to $100 billion in assets. iranian businesses are no longer locked out of global markets. iran's ships are free the sail into foreign ports, and it can buy or sell goods like oil. today tehran issued an order to immediately pump 500,000 additional barrels of oil a day, a move that could further drive down its price in market already glutted with too much supply. >> we recognize that there remain profound differences between the united states and iran. >> reporter: but challenges remain. just last week

margaret brennan at the white house got a look at it. margaret, what's in it? >> reporter: well, scott, president obama will strike a very optimistic tone in his speech tonight aimed at burnishing his track record and pushing back against what white house aides describe as an avalanche of negativity from republicans. we got a look at some of the excerpts just released from the white house, and we it tell you that the president will say that "the future we want-- opportunity and security for our families-- a rising standard of living and a sustainable, peaceful planet for our kids-- all of that is within our reach, but it will only happen if we all work together. it will only happen if we can have rational, constructive debates. it will only happen if we fix our politics." next president takes office, mr. obama will use his last state of the union address to enhance his legacy. he'll take credit for the economic recovery, the unemployment rate dropped from a high of 10% to 5% today. and he'll tout the more than 17 million previously uninsured americans who now h

here's margaret brennan. >> we have now cut off every single path that iran could have used to build a bomb. >> reporter: president obama yesterday hailed the administration's nuclear deal with iran. weekend after iran made good ahead of schedule on its promise to disable key nuclear facilities. it transferred 25,000 pounds of atomic fuel to russia, mothballed 12,000 centrifuges which can enrich uranium, and poured concrete enter a plutonium reactor, rendering it useless. u.n. weapons inspectors will now be on the ground watching whether iran cheats. in exchange, the white house lifted sanctions, allowing iran access to $100 billion in assets. iranian businesses are no longer locked out of global markets. iran's ships are free to sail into foreign ports, and it can buy or sell goods like oil. today tehran issued an order to immediately pump 500,000 additional barrels of oil a day, a move that could further drive down its price in a market already glutted with too much supply. >> we recognize that there remain profound differences between the united states and iran. >> reporter: but c

margaret brennan at the white house got a look at it. margaret, what's in it? >> reporter: well, scott, president obama will strike a very optimistic tone in his speech tonight aimed at burnishing his track record and pushing back against what white house aides describe as an sc avalanche of negativity from republicans. we got a look at some of the excerpts just released from the white house, and we can tell you that the president will say that "the future we want-- opportunity and security for our families-- a rising standard of living and a sustainable, peaceful planet for our kids-- all of that is within our reach, y all work together. it will only happen if we can have rational, constructive debates. it will only happen if we fix our politics." next president takes office, mr. the union address to enhance his legacy. he'll take credit for the economic recovery, the unemployment rate dropped from a high of 10% to 5% today. t and he'll tout the more than 17 million previously uninsured americans who now have health insurance because of obamacare. h the presid

here's margaret brennan. >> we have now cut off every used to build a bomb. >> reporter: president obama yesterday hailed the administration's nuclear deal with iran. it went into effect over the weekend after iran made good ahead of schedule on its promise to disable key nuclear facilities. it transferred 25,000 pounds of atomic fuel to russia, mothballed 12,000 centrifuges and poured concrete enter a plutonium reactor, rendering it useless. u.n. weapons inspectors will now be on the ground watching whether iran cheats. in exchange, the white house lifted sanctions, allowing iran access to $100 billion in assets. iranian businesses are no longer locked out of global markets. iran's ships are free to sail into foreign ports, and it can buy or sell goods like oil. today tehran issued an order to immediately pump 500,000 a move that could further drive down its price in a market already glutted with too much supply. >> we recognize that there remain profound differences between the united states and iran. >> reporter: but challenges remain. just last week the iranian military detained ten

. >> margaret brennan shows us the little known art.s one of a kind love story. and we'll also mark a macintosh birthday. first the 24th of january, 2016. the blizzard may have passed but the northeast is just starting to dig out after getting wall lopped. snow reached 30 inches in some places. even more in others. a lot of people got stuck at home if they were lucky. at least 18 deaths are blamed on the weather. in new jersey, the danger is flooding. still, there were many people who wrestled in it. depending on your age, it was out of this world.est from major cities blanketed by the big snow coming right up. southern coast of alaska early the u.s. geological survey says it was 6.8 quake. as yet, no reports of damage or injuries. there's speculation this morning that former mayor michael bloomberg might run for president. he's waiting until after the new hampshire primary before makingion to run as a third party candidate. with just two weeks until the all-important iowa caucuses, ther," largest newspaper in the state, yesterday endorsed senator marco rubio of

. >> pelley: margaret brennan at the white house for us tonight. margaret, thank you. tonight the mayor of flint, michigan, is asking for a lead has contaminated the water in the city of 100,000, and adriana diaz is there. >> reporter: all day a steady stream of residents received their ration of clean water from the national guard. >> it's all set. >> reporter: state troopers with lead test, filters and bottles fanned across a city that's parched for clean water. >> thank you. >> you're welcome. >> reporter: in april 2013, when flint tapped into its own river for water, it wasn't properly treated, stripping lead from pipes. after the switch, ten people died from legionnaires' disease. flint dr. mona hannah atisha found the number of children with high lead in their system doubled to nearly 70. >> we see the result at five years of age when they need early interventioner iss haves and special education. you see the impact at ten years when they're having adhd-like symptoms. and you'll see the impact when they're 15 years old and they're having trouble with the criminal

and cbs news foreign affairsent margaret brennan is also with us. robin, start with you, two big deals happened yesterday. coordinated, not coordinated,rs and the lifting of the sanctions. >> well, two and a half years ago the united states initiated diplomacy with iran on ther program. at every session they brought up the cases of the americans imprisoned in iran after a year realized they better establish a with the different set of players. it was so secret that even other members of the nuclear team didn't know about it. it was supposed to be a parallel track but to move at their own. in the end one influenced momentum of the other they came to fruition at the same time. sanctions have been lifted, now the swap has happened. where are -- where is the united states now with respect to the deal but also relationship withs the big question. who other than john kerry can speak to the iranians right now. there are no relations with iran this is really in so many ways a test case. let' deal plays out, if inspections are unfettered if over the next ten