President Vladimir Putin said Russia will establish a military task force in Crimea, which Moscow annexed from Ukraine earlier this year, but said the presence would not be too heavy or costly.
"The Defence Ministry prepared ... a separate programme for the creation and development of military forces in Crimea. I approved this programme," Putin said on a visit to the Black Sea peninsula. "It will not be excessive, it will not be expensive."
More top news
Armed police were out in force as runners competed in the largest public event in the city since Monday's terror attack.
Taliesin Myrddin Namkai Meche, 23, was stabbed along with Rick Best, 53, when they tried to stop a racist attack on two Muslim girls.
The shadow home secretary, 63, said she worked in the Home Office for nearly three years when she was a trainee.