The generous contributor, Umar Kremlev, a figure close to the ruling circles in Moscow, heads the controversial International Boxing Association and is also involved in the lucrative online sports betting industry. President’s son and his wife confirm Umar Kremlev, who is reportedly close to Vladimir Putin, paid for part of celebration Key points and original sources are listed below.

• The generous contributor, Umar Kremlev, a figure close to the ruling circles in Moscow, heads the controversial International Boxing Association and is also involved in the lucrative online sports betting industry.S1

• President’s son and his wife confirm Umar Kremlev, who is reportedly close to Vladimir Putin, paid for part of celebrationS2