A Russian security expert said the talks may be about how to secure assurances he will not leak further information if he were granted sanctuary in Russia.
May has negotiated with the Jordanian authorities to secure assurances about the evidence that would be used in his trial.
Walsh is stepping down at the close of business Thursday after failing to secure assurances of autonomy in a new contract.
Australia is also seeking to secure assurances for exporting cattle to Indonesia, with sales to the south-east Asian country at well over AS$1bn a year.
In Britain, Belgium and Poland, where thousands more jobs are at stake, officials were trying to secure assurances that factories would be kept open.
Peter Coulson, the union's regional officer, said it was seeking to limit the number of job losses and secure assurances about the airline's long-term future.
This being France, the government has already summoned Total bosses to secure assurances that the site at Dunkirk will not be closed completely, and that not one worker will lose their job.
It is understood that the UK government was keen to secure assurances that international law would be upheld, dictating that rescued people should be taken to the nearest safe port, at which they would be able to claim asylum.
The Republicans met late Wednesday afternoon to discuss the financial regulatory legislation and the steps ahead, and they defended their blocking maneuvers, saying it had helped secure assurances that changes would be made to the legislation, particularly in a chapter on liquidating failing companies.
He's hardly Mr Popular out there and it is reasonable to secure assurances that there would not be an opportunity for a plastic bag to be put over his head or a torch shone into his face until the right answer was given," he added.
