Authorities ID person of interest as Saudi national in marathon bombings, under guard at Boston hospital  —  Investigators have a suspect — a Saudi Arabian national — in the horrific Boston Marathon bombings, The Post has learned.  —  Law enforcement sources said the 20-year-old suspect …

Researchers Finally Replicated Reinhart-Rogoff, and There Are Serious Problems.  —  In 2010, economists Carmen Reinhart and Kenneth Rogoff released a paper, “Growth in a Time of Debt.”  Their “main result is that...median growth rates for countries with public debt over 90 percent of GDP …

Gun control bill in peril  —  The tough gun-control bill that President Barack Obama wants now has little, if any, chance of passing this Congress - it's struggling in the Senate and facing outright rejection in the House.  —  Vice President Joe Biden worked the phones Monday to try to salvage …

What Obama's learned about talking about terror  —  When bombs went off at the finish line of the Boston Marathon Monday afternoon, President Barack Obama was quick to speak out — but extremely cautious about what he said.  —  Obama's decision to step before cameras despite sketchy information …

After Boston, Congressman Urges Caution on Immigration Reform  —  Representative Steve King of Iowa, a prominent House conservative, says Congress should be cautious about rushing immigration reform, especially after Monday's bombing in Boston, where three people were killed.

Why the Conspiracy Theorists Will Have a Tough Time With Boston  —  Shortly before 9 p.m. I got out of a much-needed, much-delayed catch-up with a friend who shared my desire to escape — briefly — the news from Boston.  It was unescapable.  A bar next door had turned a flatscreen toward the street …

U.S. Practiced Torture After 9/11, Nonpartisan Review Concludes  —  WASHINGTON — A nonpartisan, independent review of interrogation and detention programs in the years after the Sept. 11, 2001, terrorist attacks concludes that “it is indisputable that the United States engaged in the practice of torture” …

Obama's snub to Thatcher: President won't send envoy to funeral - and leaves it to her old allies from the Reagan era  — President Obama made decision not to send a member of his administration before yesterday's bombings in Boston  — Instead, Reagan's former Secretary of State George Shultz …

Obama's Second Term Already Looks Like a Failure  —  President Barack Obama's second term has so far been a story of high liberal hopes and scant liberal achievements.  —  The president has been re-elected, demographic trends favor the growth of his coalition, his party has a technological edge …

Powerful Earthquake Strikes in Iran  —  TEHRAN — A powerful earthquake that struck southeastern Iran was felt in several countries in Asia on Tuesday, rocking buildings in the Indian capital of New Delhi, sending panicked resident of Karachi, Pakistan, fleeing into the streets and causing tremors through Persian Gulf states.