WASHINGTON - The Kremlin and Big Oil are stuffing more money into Washington's influence machine as Europe and the U.S. renew their commitment to Russian sanctions.

While Russia may be angry about international sanctions over the Ukraine conflict, Beltway lawyers are mopping up, and big names in lobbying are piling in.

Last year, the Washington, D.C., lobbying firm of former Senate Majority Leader Trent Lott, R-Miss., raked in $300,000 from Kremlin-controlled Gazprombank, which was a target of sanctions. The Gazprombank billings for Lott's firm are about double what Lott made in annual salary during any of his 18 years in the Senate.

Other high-profile former senators such as John Breaux, D-La., and Don Nickles, R-Okla., are also getting in on the action, as is former Mississippi Gov. Haley Barbour, R.

What's driving this is no mystery. While the West expresses displeasure at President Vladimir Putin's deadly Ukraine adventuring and the human toll it is taking, other things are at stake - notably billions of dollars of investments on both sides of the Atlantic in Russia's energy and finance sectors.

"Rather than send troops, we impose sanctions," Matthew Sagers, head of the Russian energy advisory service for consultant IHS Inc., said of Washington's foreign policy weapon of choice.

On the bandwagon

That explains why top U.S. energy firms and companies associated with the Russian government are spending millions of dollars trying to influence the complex sanction rules aimed at individuals and enterprises considered close to Putin.

"Everybody's trying to get on the bandwagon," said Sarosh Zaiwalla, a London lawyer whose past clients have included Saddam Hussein's Iraqi government and who now works with the Russian oil giant Rosneft.

Russia keeps hoping, of course, that it soon will be off the hook. But for now, the U.S. and European Union are holding firm and even threatening to double down - bad news for many ordinary Russians and some Russian plutocrats but a continuing windfall for ex-lawmakers and former political aides who populate Western capitals.

Perhaps unsurprisingly, registration documents on file in Congress show some energy giants and banks using their lobbying firms to follow every utterance about sanctions as if they were the play-by-play of a professional tennis match.

Sanctions also may be proving to be among the great high-level conversation starters. For example, Rex Tillerson, Exxon Mobil chief executive officer, spoke with Treasury Secretary Jack Lew - whose department administers sanctions - seven times in the second half of 2014, according to disclosures. That's more than twice as many conversations as Lew had with Jamie Dimon, CEO of JPMorgan Chase & Co., the biggest U.S. bank. (Neither Exxon, which has huge Russian lease holdings, nor Treasury would comment on the conversations.)

After the U.S. slapped sanctions on Gazprombank last summer, the company hired Squire Patton Boggs, the Washington-based lobbying firm where Lott and Breaux serve as co-chairs of the public policy practice. It received about $450,000 for the work in the nine months through March. Squire Patton Boggs declined to comment.

Tapping the insiders

Western oil companies also have been tapping well-connected insiders. Exxon, which has worked with Lott and Breaux, paid Nickles' firm more than $190,000 to represent it on "issues related to Russian sanctions impacting the energy sector" as well as other matters.

Exxon also worked with former staffers to Secretary of State John Kerry and Senate Majority Leader Mitch McConnell, R-Ky.

Chevron turned to BGR Group, the lobbying outfit run by Barbour, a former National Republican Committee chairman. A Chevron project in Kazakhstan sends oil through Russia via a pipeline in which Kremlin-controlled OAO Transneft is a major player. Chevron and its lobbyists convinced U.S. officials to spare Transneft, which is subject to financial penalties, from more onerous restrictions that would have prevented U.S. companies from doing business with it, said three people familiar with the matter who asked not to be identified.

Kurt Glaubitz, a company spokesman, said, "Chevron engages with the administration and U.S. Congress to provide perspectives on complex energy issues to help shape an effective and responsible U.S. energy policy."

As a substitute for sending troops, sanctions are proving a major growth industry for firms peddling expertise and influence. The Obama administration recently expanded sanctions on Venezuela while existing measures against Iran and Cuba are being reconsidered amid diplomatic talks.

The big money, though, lies in Russia. Unlike longstanding pariah states like Iran or Cuba, where Western business activity is relatively light, Russia is home to tens of billions of dollars in foreign investment. It has also built