berlin germany concern violent clash could erupt middle east follow report u.s. president donald trump would recognise jerusalem israel capital foreign ministry say wednesday france foreign ministry also warn website demonstrations expect nationals avoid large crowd east jerusalem west bank gaza update travel advice israel palestinian territories german ministry berlin say december 2017 may demonstrations jerusalem west bank gaza strip violent clash rule advise travellers jerusalem closely monitor situation via local media avoid affect areas senior u.s. officials say tuesday trump recognise jerusalem israel capital wednesday set motion relocation u.s. embassy city germany france warn citizens jerusalem amid plan u.s. recognition