WASHINGTON (AP) - President Barack Obama takes aim at oil market speculation today when he unveils a $52 million plan to bulk up federal oversight. The plan would increase penalties for market manipulation and empower regulators to increase the amount of money energy traders must put behind their transactions.

     KABUL, Afghanistan (AP) - Afghan President Hamid Karzai says part of the long-term relationship with the United States involves money. He says a partnership agreement being negotiated with the United States should specify exactly how much money the U.S. will give to Afghan forces in coming years. The demand could add a new hurdle ahead of a deal.

     ATHENS, Greece (AP) - The latest auction of Greek treasury bills shows a slight dip in the financially strapped country's borrowing costs. The interest rate was 4.20 percent, compared with 4.25 percent in the previous sale. Greece has been surviving on international bailouts since May 2010.

     JERUSALEM (AP) - Comments from Israel's defense minister are further exposing a rift between Israel and the U.S. over how to deal with Iran. Ehud Barak says his country has never promised the United States it would hold off from attacking Iran while nuclear talks were taking place. Barak says the talks represent lost time.

     CAPE CANAVERAL, Fla. (AP) - Space shuttle Discovery has begun its final journey. NASA's oldest and most traveled shuttle rode into the Florida sky this morning atop a modified jumbo jet. It's set to become a museum piece at the Smithsonian Institution. A low pass over Washington is on the agenda.

SANFORD, Fla. (AP) - The neighborhood watch volunteer who is charged with second-degree murder for fatally shooting Trayvon Martin is asking a judge to step down after she revealed a potential conflict of interest last week. The judge's potential conflict comes from her husband. He works with Orlando attorney Mark NeJame, who is also serving as a CNN legal analyst on the case.

     WEST PALM BEACH, Fla. (AP) - Gov. Rick Scott says he rejects suggestions that charges came in the killing of Trayvon Martin simply because of public pressure. Scott said Monday that he doesn't believe special prosecutor Angela Corey is influenced by anything but the facts of the case.

     ST. JOHNS, Fla. (AP) - Florida Gov. Rick Scott is signing a new state budget into law at a northeast Florida elementary school. Scott is scheduled on Tuesday to approve a new $70 billion state budget at Cunningham Creek Elementary in St. Johns County.

CAPE CANAVERAL, Fla. (AP) - NASA's oldest and most traveled space shuttle, Discovery, is being flown to a new life as a museum relic. Discovery departed Florida's Kennedy Space Center at daybreak today aboard a modified jumbo jet. It's bound for Washington, where it will be a Smithsonian exhibit.

TAMPA, Fla. (AP) - Organizers of the Republican National Convention in Tampa say 300 buses will shuttle delegates from hotels on both sides of Tampa Bay to the arena downtown.  The Tampa Bay Times (http://bit.ly/HK1KGR ) reports that parking for the fleet of buses will have wide-ranging effects on local commuters and others.  Because of the space needed for bus parking, as well as road closures and other convention operations, demonstrators could have a walk of 15 blocks or more to get near enough to see the Tampa Bay Times Forum, the site of the Aug. 27-30 convention.

TAMPA, Fla. (AP) - A convicted serial killer is now faces a fourth trial in the 1986 fatal stabbing of a Tampa area woman.  Only 13 of the 70 prospective jurors questioned Monday recognized 50-year-old Oscar Ray Bolin Jr., who is on Florida's death row for killing two other women.  The Tampa Bay Times (http://bit.ly/J6eZgA ) reports three convictions and two death sentences in the killing of 25-year-old Natalie Blanche Holley haven't survived the appeals process. So prosecutors are back in court. But this time it's a second-degree murder charge.