U.S. House Speaker John Boehner has warned that the House might consider defunding U.S. military operations in Libya this week. Here is a look at this and other stories that CNN plans to follow this week:

Boehner threatens funding of Libya mission

Arguing that President Barack Obama has failed to get required congressional authorization for U.S. participation in the NATO military mission in Libya, Boehner, R-Ohio, has said that the House might seek to defund U.S. operations there when it considers a defense appropriation measure this week.

Boehner says the 1973 War Powers Resolution, which limits the ability of the president to unilaterally engage U.S. forces in combat, required Obama needed to get congressional approval of the Libya operations by today, 90 days after the campaign started. The White House has responded that Obama didn't need authorization because U.S. forces play only a supporting role in Libya and don't engage in what the resolution defined as hostilities.

If Boehner tries to withhold the money, he won't have the support of two high-profile GOP senators, John McCain of Arizona and Lindsey Graham of South Carolina. Both said on Sunday talk shows that the move would undermine NATO allies.

Southwest wildfires consuming acres at rapid pace

Dozens of wildfires are burning in Arizona, New Mexico and Texas, and weather conditions are making containment difficult.

On Sunday, the National Weather Service issued a red flag warning - which means gusty winds, high heat and low humidity may combine to let fire spread easily - in those three states and four others. Wind speeds are expected to decrease Monday in New Mexico, but critical fire weather conditions still will be likely in parts of the state, the weather service said.

U.S. wildfires have burned almost as many acres in the first half of 2011 (3.1 million acres) as were recorded by the National Interagency Fire Center for the first 11 months of 2010 (3.2 million acres). One Arizona fire has burned 511,118 acres and forced hundreds of evacuations since it started May 29; it was 44% contained as of Sunday, fire officials said.

New York Senate could vote on same-sex marriage legalization

The New York Senate could vote Monday on a bill that would legalize same sex marriage in New York and bring the number of states granting same-sex marriage licenses to six.

The state Assembly passed the bill last week. As of Friday, the bill appeared to be one supporter short of passage in the Senate, with some senators expressing concern that the bill could expose religious institutions and religiously affiliated adoption agencies to lawsuits. State lawmakers are due to leave for summer recess after Monday.

Five states - Massachusetts, Connecticut, Iowa, Vermont and New Hampshire - and the District of Columbia currently grant same-sex marriage licenses.

Syrian president to address nation Monday

Syrian President Bashar al-Assad, who leads a country where popular unrest took hold more than three months ago, is expected to address his nation Monday, according to state-run media reports.

More than 1,100 people may have died since the unrest across Syria began in mid-March, after teens were arrested for writing anti-government graffiti in Daraa, according to Amnesty International. The Syrian government has consistently blamed the protest casualties on "armed gangs."

International pressure has steadily grown in recent months, with critics accusing forces loyal to Assad of targeting defenseless demonstrators and prohibiting outside help to those in need.

A wave of Syrians has fled their country for Turkey to escape violence. The Turkish government said over the weekend that more than 10,100 Syrians have crossed the border.

The United States is collecting information on possible war crimes by Syrian security forces amid the crackdown, a senior Obama administration official said last week. The administration is lobbying members of the U.N. Security Council to support a resolution on Syria that, according to another administration official, would send a strong message to Assad.

European finance ministers mull a second bailout for Greece

European Union finance ministers are meeting in Luxembourg early this week to discuss, among other things, whether to produce a second economic bailout package for debt-strapped Greece.

There are fears that efforts to restructure Greece's debt could spark an investor panic similar to that in the 2008 collapse of Lehman Brothers, the U.S.-based global investment bank. The debt crisis also raises concerns for Europe's currency, the euro. The world economy could be shaken should Greece default on its debts.

Greek Prime Minister George Papandreou is fighting to stay in power amid weeks of protests against plans to bring down the country's enormous budget deficit. The deficit has led to tax hikes and public-sector job losses, which has exacerbated an already record-high unemployment there.

Wimbledon begins; 'longest match' competitors meet again

The time for pre-tournament galas and slightly alarming party dresses are over: Wimbledon, the only Grand Slam tennis event played on grass, begins Monday.

Defending men's singles champ Rafael Nadal, who has won the last two Wimbledons that he has entered, will play his first-round match Monday on Centre Court against the United States' Michael Russell.  SI.com's Jon Wertheim writes that it's hard to pick against the reigning French Open champ.

The tournament marks the returns of American sisters Serena and Venus Williams, both of whom had been out with injuries for months. Serena, the defending women's singles champ at Wimbledon, is the seventh seed this year.

On Tuesday, the two men who played the longest-ever tennis match at last year's Wimbledon tournament, American John Isner and Frenchman Nicolas Mahut, will play against each other again in first-round match. Last year, Isner defeated Mahut in an 11-hour match that included a 70-68 fifth set before losing in the second round.