World Anti-Doping Agency (WADA) president Craig Reedie has vowed to continue in the role as he seeks to defend "the integrity of sport".
The global anti-doping body has come under fire for the way it dealt with revelations of state-sponsored doping in Russia prior to the 2016 Olympics in Rio.
Reedie himself has been fiercely criticised as WADA was seen to be ineffective in meting out punishment or devising preventative measures, but the 75-year-old is set to stand unopposed for a second three-year term.
"I've spent 15 years of my life working with WADA," he told BBC Sport. "I don't think it's a particularly good idea if I walk away from it simply because it's getting difficult.
"We've been faced with a difficult situation. I think we're going to come through it and we have to. The integrity of sport is at stake."
However, the situation is likely to get worse before reputations can begin to be mended, with professor Richard McLaren's second independent report due next month.
Reedie added: "If, about three and a half years ago, when I was invited to apply [to be WADA president], somebody had told me this would have happened, it maybe isn't the kind of job that you would volunteer for.
"That having been said, there are serious issues involved here.
"The past has been pretty dreadful. I'm really hopeful that once we get the second part of the McLaren report out of the way, we can draw a line under the past and move forward.
"We have to get the Russian anti-doping agency properly compliant again and we need to look at what WADA is currently doing, and see if we can do it better."