NIGER's government has extended a state of emergency to the entire region that surrounds the capital Niamey and suspended access to a giraffe reserve where six French aid workers and two Nigeriens were shot dead. Attackers on motorbikes ambushed the group on Sunday while they were driving through the reserve, a popular destination for expatriates southeast of Niamey in the Tillabery region. French President Emmanuel Macron tweeted on Tuesday that France would bolster security measures to protect its nationals in West Africa's Sahel region, without providing any details. France has 5,100 troops deployed in the arid region south of the…