It took several attempts, but Falcon Oil & Gas finally got court approval for its €134 million acquisition – with a caveat. The Irish oil and gas explorer was seeking court approval in Canada for a plan of arrangement that would rubber-stamp a deal to be acquired by Tamboran, an Australian natural-gas firm. However, one of Falcon’s shareholders, Viktor Vekselberg, a sanctioned Russian oligarch, looms large. Lawyers for Vekselberg appeared in the Vancouver courtroom earlier this month to oppose the plan of arrangement that was being put before the judge. The oil-and-gas company is incorporated in British Columbia but headquartered…