BERN, Switzerland (AFP) - "It is evident that these subjects are not easily resolved," Gul said during his two-day visit to Switzerland."However, we maintain our firm commitment for the protocols, which aims for the normalisation of Turkish-Armenian relationship, to enter into vigour," he said, referring to pacts signed between the two parties last October in Zurich."We will continue our efforts so that a sustainable and comprehensive peace would dominate in the Caucasus," he added.Gul added that he hoped that Armenian President Serzh Sarkisyan "continues with the same courage so that process could be crowned with success."Switzerland last year mediated between Armenia and Turkey, leading to landmark pacts being signed in October in a first step towards ending decades of hostility stemming from massacres of Armenians under Ottoman Turks.However, moves stalled after an Armenian court upheld the legality of the protocols, but said they could not contradict Yerevan's official position that the massacres constituted genocide -- a label fiercely rejected by Ankara.Turkey in turn accused Armenia of trying to rewrite and set new conditions on the deals, while Yerevan warned that the rapprochement was under threat of collapse.In a speech welcoming Gul, Swiss President Doris Leuthard also urged Turkey and Armenia to push ahead with normalising ties."Switzerland is persuaded that there must not be a retreat before any efforts to continue the track of dialogue and of cooperation, as Turkey and Armenia has undertaken with great courage these last years," Leuthard said."May the process of normalisation continue between the two countries," she added.