By Samuel Indyk LONDON (Reuters) -The British pound rose against the dollar and fell against a strengthening euro on Tuesday after Ukrainian and Russian negotiators announced progress in their peace talks. Russia promised to scale down its military operations around Kyiv and northern Ukraine, while Ukraine proposed to adopt a neutral status with international guarantees to protect it from attack. These announcements prompted a rally in European equities and an unwinding of foreign exchange trades built up since the start of the Ukraine war, according to Vanda Research senior strategist Viraj P…