Ukraine's Olga Kharlan was invited to compete at the Olympic Games in Paris next year by the IOC after the fencer was disqualified for refusing to shake hands with a Russian opponent during a tournament earlier this week.
A letter sent to Kharlan signed by International Olympic Committee President Thomas Bach said she would be granted an additional quota place at the Olympics if she failed to qualify.
"Rest assured the IOC will continue to stand in full solidarity with the Ukrainian athletes and the Olympic community of Ukraine during these extremely difficult times," it added.
Kharlan, a four-time Olympic medallist and world champion, won her individual sabre bout 15-7 and then refused to shake hands with Russian Anna Smirnova - competing as a neutral - at the World Championships in Milan on Thursday.
In fencing's rules, shaking an opponent's hand is mandatory and failure to do so results in a 'black card'.
Ukraine's Youth and Sports minister Vadym Huttsait welcomed the IOC decision in a Facebook post.
"Despite all the hate that my team and I have endured over the past 24 hours, after working persistently for the benefit of Ukrainian athletes and not responding to this, we now have our first result," he said.
"Work is continuing to rescind the "black card" for Olha's future competitions and to prevent similar situations in other sports."
Ukraine's Fencing Federation (NFFU) also backed Kharlan.
Ukrainian athletes in other sports - including tennis players Elina Svitolina and Marta Kostyuk - have also refused to shake hands with Russian and Belarusian opponents following Russia's invasion of Ukraine, with Moscow using Belarus as a staging ground for what it calls a "special military operation".
The IOC said earlier on Friday that international federations should handle situations involving Ukrainian and neutral athletes with sensitivity.
Rules relaxed
Kharlan represented Ukraine in the fencing tournament after the country's sports ministry relaxed its rules over national sports teams taking part in Olympic, non-Olympic and Paralympic events with competitors from Russia and Belarus.
"The decision taken by the Ukraine sports ministry will allow Ukrainian athletes to participate in international competitions and will enable them to qualify for the Olympic Games Paris 2024," the IOC told Reuters on Friday.
"We are glad that they will be given this opportunity, and at the same time, we are aware of the difficult inner conflicts they may have, given the aggression against their country.
"Therefore, we encourage International Federations to handle situations involving Ukrainian and Individual Neutral Athletes with the necessary degree of sensitivity.
"We continue to stand in full solidarity with the Ukrainian athletes and the Olympic community of Ukraine."
- Reuters