- Summary- Supreme Leader warns protesters- Police deploy heavily in cities in southeast, southwest- Activists call for protests in Arab region- Guards officer, Basij militiaman killedDUBAI, Oct 14 (Reuters) - Iran's Supreme Leader Ayatollah Ali Khamenei said on Friday that noone should dare think they can uproot the Islamic Republic, in his toughest warning to protesters since Mahsa Amini's death in police custody ignited nationwide unrest now in its fourth week.There was heavy deployment too of police and the Basij - a volunteer militia leading the crackdown - in the main squares of Zahedan, the capital of Sistan-Baluchistan province at the border with Pakistan in the southeast, two witnesses said.Iran has blamed the violence on enemies at home and abroad, including armed separatists and Western powers, accusing them of conspiring against the Islamic Republic and denying security forces have killed protesters.Iran's Kurds are part of an ethnic minority spread between several regional states whose autonomy aspirations have also led to conflicts with authorities in Iraq, Syria and Turkey.While many officials have struck an uncompromising tone, a top adviser to Khamenei was cited this week as questioning whether police should be enforcing headscarf-wearing - rare criticism of state efforts to impose the hijab."