foreign currencies; it can be a source of large capital flows to counteract those originating from the market. Inbound capital flows (from sales of the nation's foreign currency), especially when combined with a current account surplus, can cause a rise in value (appreciation) of a nation's currency, while outbound flows can cause a fall in value (depreciation). If a government (or, if authorized to operate independently in this area, the central bank itself) does not consider the market-driven change to its currency value to be in the nation's best interests, it can intervene. Central bank operations and the reserve account Conventionally, central banks have two principal tools to influence the value of their nation's currency: raising or lowering the base rate of interest and, more effectively, buying or selling their currency. Setting a higher interest rate than other major central banks will tend to attract funds via the nation's capital account, and this will act to raise the value of its currency. A relatively low interest rate will have the opposite effect. Since World War II, interest rates have largely been set with a view to the needs of the domestic economy, and moreover, changing the interest rate alone has only a limited effect. A nation's ability to prevent a fall in the value of its own currency is limited mainly by the size of its foreign reserves: it needs to use the reserves to buy back its currency. Starting in 2013, a trend has developed for some central banks to attempt to exert upward pressure on their currencies by means of currency swaps rather than by directly selling their foreign reserves. In the absence of foreign reserves, central banks may affect international pricing indirectly by selling assets (usually government bonds) domestically, which, however, diminishes liquidity in the economy and may lead to deflation. When a currency rises higher than monetary authorities might like (making exports less competitive internationally), it is usually considered relatively easy for an independent central bank to counter this. By buying foreign currency or foreign financial assets (usually other governments' bonds), the central bank has a ready means to lower the value of its own currency; if it needs to, it can always create more of its own currency to fund these purchases. The risk, however, is general price inflation. The term "printing money" is often used to describe such monetization, but is an anachronism, since