Idhna (Arabic: إذنا‎) is a Palestinian town in the southern West Bank, located in the Hebron Governorate, 13 kilometers west of Hebron and about one kilometer east of the Green Line. According to the Palestinian Central Bureau of Statistics, the town had a population of approximately 19,012 inhabitants in 2007.

Idhna is physically divided into southern and northern parts by the Wadi al-Feranj. Idhna's primary source of income is agriculture and the town's total land area is 21,526 dunams (215km²), of which 2,809 dunams (28km²) are built up area. Idhna is governed by a municipal council of thirteen members and six departments.

Idhna's site was inhabited since Canaanite times (the Bronze Age), evident from ancient remains found in the town. The town is identified with the biblical city of Dannah, mentioned in Joshua 15:49.Hebrews, Byzantines and Arabs succeeded in gaining control of the town and coins, statues, tombs and pottery dating from these various rulers were found in the town.

Edward Robinson, who visited Idhna in 1838, recorded that the town's two parts were led by a sheikh and the inhabitants of each part followed and backed their respectable sheikh in internal quarrels. Adjacent to Idhna are the ruins of the original village which is totally covered by cultivable fields. Marble tesserae (mosaic stones) were found on the site.

A police officer (also known as a policeman or policewoman, and constable in some forces, particularly in the United Kingdom and other Commonwealth nations) is a warranted employee of a police force. In the United States, "officer" is the formal name of the lowest police rank; in many other countries "officer" is a generic term not specifying a particular rank, and the lowest rank is often "constable". Police officers are generally charged with the apprehension of criminals and the prevention and detection of crime, and the maintenance of public order. Police officers may be sworn to an oath, and have the power to arrest people and detain them for a limited time, along with other duties and powers.

Some police officers may also be trained in special duties, such as counter-terrorism, surveillance, child protection, VIP protection, and investigation techniques into major crime, including fraud, rape, murder and drug trafficking.

Responsibilities of a police officer are varied, and may differ greatly from within one political context to another. Typical duties relate to keeping the peace, law enforcement, protection of people and property, and the investigation of crimes. Officers are expected to respond to a variety of situations that may arise while they are on duty. Rules and guidelines dictate how an officer should behave within the community, and in many contexts restrictions are placed on what the uniformed officer wears. In some countries, rules and procedures dictate that a police officer is obliged to intervene in a criminal incident, even if they are off-duty. Police officers in nearly all countries retain their lawful powers, while off duty.