Tuhia he tohutoro mō tēnei wāhanga - I te tau 1906 ka heke ia ki Switzerland, ka noho ki Geneva, i reira ka tutaki ai ia ki a Vladimir Lenin. I te marama o Akuhata 1907, i mahi a Semashko hei karere mai i te whakahaere Bolshevik Geneva i te International Socialist Congress o te Tuarua o te Ao. I hopukina ia e te pirihimana o Switzerland i muri i tana whiunga i te take o te whakakahoretanga o Tiflis i te tau 1907
, i tonoa he reta ki a ia mai i te whare herehere.