IRAN

Ryan claimed that when Obama was elected Iran had enough nuclear material to make one bomb. Now, he said, Iran has enough for five. “They’re racing toward a nuclear weapon,” he said.

No evidence exists to show that Iran has uranium enriched to 90 percent, which is necessary for a nuclear weapon. Iran does have highly enriched uranium, between 20 and 27 percent, according to International Atomic Energy Agency.

SYRIA

In challenging Ryan to a way to quell the violence in Syria, Biden suggested the next step was putting “American boots on the ground.” But no one has proposed sending ground troops to Syria. The Syrian opposition has beseeched the U.S. and other Western powers for measures such as the imposition of a no-fly zone, the establishment of buffer zones along the borders and the provision of weapons to Syrian rebels. Both camps have backed the idea of U.S.-allied Arab nations arming the Syrian rebels fighting to unseat President Bashar Assad. However, recent news reports suggest that the Obama administration was cautioning against the supplying of shoulder-fired missiles and other heavy weapons that could boost the rebel side of Syria’s bloody stalemate.

MEDICARE

Ryan repeated the claim that the Affordable Care Act, also known as Obamacare, would take $716 million from Medicare, turning it into a "piggybank" for the health overhaul law. The federal healthcare law cuts projected Medicare spending by $716 billion from 2013 to 2022. The funding cuts wouldn’t affect services for seniors because they come mainly from lower payments to hospitals and other providers, higher premiums for affluent beneficiaries and lower payments to Medicare Advantage plans.

But some experts have questioned whether the cuts would limit the availability of services for beneficiaries in the future and lead to a shortage of care providers like the Medicaid program is currently experiencing. If that happens, Congress would have to increase the payments to providers, which could lead to higher Medicare costs than the current law now projects.

In order to slow Medicare spending, Romney would replace the program’s current delivery system with a flat payment to beneficiaries known as a “voucher” or “premium support” payment, which they could use to buy private insurance or traditional Medicare coverage. If their medical costs exceed the amount of their voucher, seniors would have to pay the difference regardless of whether they’ve chosen private insurance or traditional Medicare. Critics say insurers would end up recruiting younger, healthier seniors under the new system, leaving traditional Medicare with older, sicker people who are more costly to care for.

Romney also wants to repeal the healthcare law. The Congressional Budget Office said repealing the measure would increase the deficit by $119 billion and cause Medicare’s Hospital Insurance Trust Fund to become insolvent eight years earlier – in 2016 instead of 2024. Repealing the law would bring about some Medicare savings, most notably by eliminating the law’s “doughnut hole” prescription drug coverage and by eliminating a range of free preventative care and screenings.

Ryan also said the healthcare’s 15-member Independent Payment Advisory Board would be "in charge of cutting Medicare each and every year in ways that will lead to denied care for current seniors." Actually, the panel would submit recommendations to Congress for cutting Medicare costs if they exceed a targeted growth rate. The recommendations become law if Congress fails to pass a similar measure that saves the same amount.